{"product_id":"simthread-embroidery-prewound-bobbins-size-a-sa156-144-pack-white-60wt-polyester-ready-to-install","title":"Simthread Embroidery Prewound Bobbins Size A (SA156) 144-Pack White — 60wt Polyester, Ready-to-Install","description":"\u003cp\u003e\u003cstrong\u003eSimthread 144 prewound white bobbins: ready-to-install Size A (SA156) 60-weight polyester bobbins built for consistent stitch tension on home and commercial embroidery machines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you run an embroidery or sewing machine regularly, having a large set of dependable prewound bobbins saves time and prevents stitch problems. These Simthread bobbins come prefilled with high-tenacity 70D filament polyester in white, sized to fit a wide range of machines. The pack contains 144 ready-to-use bobbins so you can swap cores quickly during long projects or keep a well-stocked supply in your sewing room.\u003c\/p\u003e\n\n\u003ch3\u003eWill these bobbins fit my embroidery or sewing machine?\u003c\/h3\u003e\n\u003cp\u003eThese are Size A (SA156) prewound bobbins, often called Class 15, compatible with many home and light-commercial machines. They are made to standard dimensions that fit brands like Brother, Babylock, Janome, Juki, Elna, Singer and others—always confirm your machine's manual for Class 15\/Size A compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to the common Size A (SA156) \/ Class 15 standard.\u003c\/li\u003e\n  \u003cli\u003eWorks with most Brother, Babylock, Janome, Juki, Elna, Singer models.\u003c\/li\u003e\n  \u003cli\u003eCheck machine manual or existing bobbin for SA156\/Class 15 marking.\u003c\/li\u003e\n  \u003cli\u003ePrewound cores reduce setup time compared with winding your own bobbins.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the 60-weight polyester affect my stitches?\u003c\/h3\u003e\n\u003cp\u003eSixty-weight polyester is a fine, strong thread that balances smooth appearance with durability for embroidery and fine sewing. The filament polyester construction keeps tension stable and minimizes breakage, giving even stitches across dense fills and delicate satin lines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e60wt gives a refined finish for detailed work and satin stitching.\u003c\/li\u003e\n  \u003cli\u003eFilament polyester (70D) provides consistent tension and low friction.\u003c\/li\u003e\n  \u003cli\u003eReduces static and thread fluffs that can interrupt machine performance.\u003c\/li\u003e\n  \u003cli\u003eWhite colour offers a neutral under-thread that blends with many top threads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat advantages do prewound bobbins offer over empty spools?\u003c\/h3\u003e\n\u003cp\u003ePrewound bobbins eliminate winding time and often provide more consistent winding than manual or on-machine winding. They save setup effort and help maintain steady stitch quality, especially useful during production runs or multi-design embroidery sessions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReady to install—no winding required between jobs.\u003c\/li\u003e\n  \u003cli\u003eUniform tension helps prevent skipped stitches and thread snarls.\u003c\/li\u003e\n  \u003cli\u003eLarge pack size reduces interruptions for replenishing bobbins.\u003c\/li\u003e\n  \u003cli\u003ePrewound polyester resists machine oil absorption and distortion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These Simthread 144-pack white prewound bobbins suit hobbyists, small businesses, and embroidery professionals who need a steady supply of consistent, machine-ready bobbin thread. If you run multiple projects, work on production embroidery, or prefer fewer thread changes, this large pack of Size A SA156 bobbins in 60-weight polyester provides a reliable under-thread that pairs well with a wide range of top threads and fabrics. Always double-check your machine's bobbin size requirement before purchasing to ensure proper fit and performance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bobbins compatible with Brother embroidery machines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—Size A (SA156) \/ Class 15 fits many Brother models; verify your machine's bobbin type in the manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these prewound bobbins for sewing as well as embroidery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—60wt polyester prewound bobbins work for both embroidery and most sewing tasks requiring Size A bobbins.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Simthread","offers":[{"title":"Default Title","offer_id":55294673322321,"sku":"B07R395YWX","price":43.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/simthread-front-packaging-white-bobbins_5ca38bd4-9c02-422b-b20b-523176d7b8ae.jpg?v=1791934433","url":"https:\/\/craftiche.co.uk\/products\/simthread-embroidery-prewound-bobbins-size-a-sa156-144-pack-white-60wt-polyester-ready-to-install","provider":"Craftiche","version":"1.0","type":"link"}