This set of 10 metal one-piece bobbins feature holes on one side and a solid surface on the other side. The outside diameter measures 21mm, the height measures 9mm, and the axis diameter is 6mm.
Fits Singer Industrial models: 188K, 188U, 191K, 195K, 196K, 241, 245, 251, 281, 291U, 366K, 391U, 491D, 491U, 770, 95, 96
Fits Consew models: 102, 103, 210, 220, 2230, 230, 230B, 230R, 231, 736R-1, 99
Fits Juki models: DDL-127, DDL-227, DDL-500, DDL-552, DDL-553, DDL-555, DDL-5550, DDL-5600, DDL-8300, DDL-8500, DDL-8700, DDL-9000, TL98E, TL98Q
Fits Brothers models: B705, B707, B715, B716, B735, B737, B738, B745, B755, B757, B758, B767, B781, PQ1300, PQ1500