{"product_id":"sewtech-144pcs-size-l-prewound-bobbins-black-70d-2-60wt-polyester-thread-clear-plastic-sa155-bobbins-for-commercial-home-embroidery-sewing-machines","title":"Sewtech 144pcs Size L (SA155) Prewound Bobbins, 70D\/2 60WT Black Polyester Thread, for Embroidery \u0026 Sewing Machines","description":"\u003cdiv style=\"max-width: 920px; margin: 0 auto; color: #1f2933; font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.65;\"\u003e\n\u003cdiv style=\"padding: 8px 0 18px; text-align: center;\"\u003e\n\u003cp style=\"margin: 0 0 8px; color: #137a43; font-size: 14px; font-weight: bold; letter-spacing: 0.08em; text-transform: uppercase;\"\u003eOne box. 144 pcs Prewound bobbin changes.\u003c\/p\u003e\n\u003ch2 style=\"margin: 0 0 14px; color: #111827; font-size: clamp(26px, 4vw, 32px); line-height: 1.2;\"\u003eKeep Every Embroidery Job Moving\u003c\/h2\u003e\n\u003cp style=\"max-width: 760px; margin: 0 auto; font-size: 18px;\"\u003eSewtech Size L prewound bobbins give busy embroidery rooms a convenient supply of black 70D\/2 (60WT) polyester thread—precisely wound, neatly packed, and ready for compatible Size L (SA155) machines.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/black_prewound_bobbins.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eReady When the Next Design Starts\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eManual bobbin winding adds another step between you and a finished order. With 144 prewound bobbins on hand, you can replace an empty bobbin and return to stitching quickly. The bulk format is a practical choice for embroidery businesses, customization studios, classrooms, and dedicated home workrooms using the correct bobbin size.\u003c\/p\u003e\n\u003cul style=\"margin: 0 0 30px; padding-left: 24px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eProduction-friendly quantity:\u003c\/strong\u003e A 144-count box helps reduce frequent reordering and keeps backup bobbins close to the machine.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eConsistent machine winding:\u003c\/strong\u003e Uniform, tightly packed layers support a steady release of thread through changing stitch directions and speeds.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eClear plastic construction:\u003c\/strong\u003e Transparent sides make the bobbins easy to identify and organize while resisting oil absorption and flange distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile black thread:\u003c\/strong\u003e A useful everyday choice for light fabrics, lettering, monograms, patches, apparel, and general sewing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eFine Bobbin Thread for a Clean Foundation\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eThe black 70D\/2 (60WT) polyester thread provides a fine, soft-feel foundation beneath the decorative top thread. Its cottonized hand makes it well suited to garments and projects worn close to the skin, while the lighter weight supports detailed fills, satin stitching, small lettering, and decorative motifs without adding unnecessary bulk.\u003c\/p\u003e\n\u003ch3 style=\"margin: 30px 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003ePredictable Feed Starts with Even Winding\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eInconsistent self-winding can create loose areas or uneven tension between layers. Sewtech prewound bobbins are prepared with controlled winding equipment for compact, even layers that support smoother thread delivery from the beginning of the bobbin to the end.\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/black_Bobbin_Size.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"margin: 0 0 34px; padding: 22px 24px; background: #f3f8f5; border-left: 5px solid #137a43; border-radius: 6px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; color: #111827; font-size: clamp(21px, 3vw, 24px); line-height: 1.25;\"\u003eSize L \/ SA155 — Check Before You Order\u003c\/h3\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eThese are Size L \/ Style L \/ SA155 bobbins.\u003c\/strong\u003e They are shorter than Size A \/ Class 15 \/ SA156 bobbins. Bobbin sizes are not universally interchangeable, so check your machine manual and compare the original bobbin dimensions before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/L_bobbins.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eProduct Specifications\u003c\/h3\u003e\n\u003cdiv style=\"width: 100%; margin: 0 0 38px; overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 560px; border-collapse: collapse; font-size: 16px; line-height: 1.5; height: 240px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"width: 38%; padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003eProduct Code\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003ePB-W70-144L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003ePack Quantity\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003e144 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003eBobbin Format\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003eSize L \/ SA155\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 48px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 48px;\"\u003eApproximate Size\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 48px;\"\u003e20.5 mm diameter × 8.9 mm high (0.81 × 0.35 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003eThread Specification\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003e70D\/2 polyester, 60WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003eThread Color\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 24px;\"\u003eBobbin Material\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 24px;\"\u003eClear plastic sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 48px;\"\u003e\n\u003cth scope=\"row\" style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); background: rgb(243, 248, 245); text-align: left; height: 48px;\"\u003eRecommended Application\u003c\/th\u003e\n\u003ctd style=\"padding: 12px 14px; border: 1px solid rgb(216, 224, 219); height: 48px;\"\u003eCompatible embroidery and sewing machines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eA Practical Supply for Repeat Work\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eThe organized 144-piece box keeps bobbins together and protected between jobs. Whether you are preparing repeat logo orders or working through a large personal project, a full supply helps prevent the workflow from stopping because the next bobbin has not been wound.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/black_polyester_bobbins.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eCompatible Machines\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eSize L bobbins are commonly found in commercial multi-needle embroidery workflows and in selected home embroidery or sewing machines. Potentially compatible brands include Brother, Ricoma, Happy, Tajima, BAI, ZSK, Melco, Barudan, and SWF—but compatibility depends on the exact model, bobbin case, and manufacturer specification.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003e\u003cstrong\u003eBest practice:\u003c\/strong\u003e Confirm that the machine manual or original bobbin identifies Size L, Style L, or SA155. Do not select a bobbin based on brand name alone.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/application_of_L_bobbins.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\n\u003ch3 style=\"margin: 0 0 14px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eA Steady Base for Detailed Embroidery\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eFrom compact lettering to dense decorative shapes, the bobbin thread supports every top-thread color from underneath. Reliable bobbin preparation lets the finished design—not the setup process—remain the focus.\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/vibrant-embroidery-pattern-collage.webp?v=1789098315\" alt=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 style=\"margin: 0 0 16px; color: #137a43; font-size: clamp(22px, 3vw, 26px); line-height: 1.25;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4 style=\"margin: 22px 0 6px; color: #111827; font-size: 19px; line-height: 1.35;\"\u003eWhat is included in the package?\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003eOne box containing 144 black, plastic-sided Size L prewound bobbins.\u003c\/p\u003e\n\u003ch4 style=\"margin: 22px 0 6px; color: #111827; font-size: 19px; line-height: 1.35;\"\u003eIs SA155 the same as SA156?\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003eNo. This SA155 \/ Size L bobbin is shorter. SA156 generally refers to the taller Size A \/ Class 15 format. Use only the size specified for your machine.\u003c\/p\u003e\n\u003ch4 style=\"margin: 22px 0 6px; color: #111827; font-size: 19px; line-height: 1.35;\"\u003eCan these be used in a home embroidery machine?\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003eThey can be used in selected home machines that specifically require Size L or SA155. They should not be used in a machine that calls for Size A, Class 15, or SA156.\u003c\/p\u003e\n\u003ch4 style=\"margin: 22px 0 6px; color: #111827; font-size: 19px; line-height: 1.35;\"\u003eWhat kind of thread is included?\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 30px;\"\u003eThe bobbins are wound with black 70D\/2, 60WT polyester bobbin thread with a soft, cottonized feel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sewtech","offers":[{"title":"Default Title","offer_id":48581605884122,"sku":"PB-B70-144L","price":180.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/4759\/0618\/files\/black_prewound_bobbins.webp?v=1789098315","url":"https:\/\/www.hooptalent.com\/id\/products\/sewtech-144pcs-size-l-prewound-bobbins-black-70d-2-60wt-polyester-thread-clear-plastic-sa155-bobbins-for-commercial-home-embroidery-sewing-machines","provider":"HoopTalent","version":"1.0","type":"link"}