I bought them for my Singer 15 Series 15-91. It looks like the much-needed knurling on these coils was done by hand. The notch is important and these coils will not work with the Vintage Singer 15-91.
BEAMNOVA 25Mm Round Button Maker Machine - DIY Pin Maker Kit With 1000 Button Parts Supplies For Crafting And Custom Badges
36 Review
40 Pack Dry Erase Markers - 12 Assorted Colors + 7 Black - Thick Barrel Design For Writing On Whiteboards, Boards, Mirrors & Windows
42 Review
VEIREN 100-Piece Adjustable Buckle Elastic Bands For DIY Crafts And Garment Sewing, High-Stretch Cord For Earloop Lanyards, Earmuffs, And More - Black
44 Review
3 Pack Of 25L Black CleverMade Collapsible Milk Crates | Stackable Storage Bins & Folding Baskets
39 Review
Craft Tool Quickstik by We R Memory Keepers
7 Review
π 100 Pack of Assorted Colorful Adhesive Stick-On Heart, Star, and Round Shaped Jewel Gems for Arts & Crafts, Themed Party Decorations, Children's Activities - Super Z Outlet
7 Review
Coolrunner Mixed Food Resin Flatback Kawaii Cabochons Decoden (60) - Adorable Assortment of Miniature Treats for DIY Crafts and Decor Projects
9 Review
𧲠Enhanced Magnetic Large: Basic 8 Inch to 32 Inch Size for Optimal Performance
9 Review