Class 15 Super Bobs Cotton are prewound bobbins that are wound with our strong and low-lint Master Piece 50 wt. 2-ply Egyptian extra-long staple cotton thread. Each bobbin contains 80 yds. and each pack contains 12 bobbins.

• Color: Black
• Made of: Cotton
• Recommended Use: Bobbin
• Thread Weight: 50wt
• Length: 80yds per Bobbin