Product Description:
These prewound bobbins are 100% high tenacity filament polyester for an extra strong, extra smooth embroidery experience.  The 70 weight thread enables you to sew longer between changing bobbins and eliminates the need for winding your own, increasing productivity.

• More Yardage -- 134 yds per bobbin.  Increased machine run time; fewer bobbin changes; increased production 
• Quick bobbin changes -- No winding of thread necessary
• Size "L" -- Fits nearly all household machines
• 100% Polyester  -- High quality thread on the bottom ensures consistent quality on the top.
• High Value -- Lower costs for you ensure higher profitability
• 144 Bobbins Per Box
• Durable, smooth finish -- cardboard sides ensures even thread distribution for consistant stitches.