Singer 400W & 402W & 451K Hooks & Bases

HSH-7.94D Genuine Hirose Hook & Base with D type gib for light materials will fit most types of standard non trimmer flat bed machines.

HSH-7.94A Genuine Hirose Hook & Base with A type short gib for heavy materials. Wll fit most types of standard non trimmer flat bed machines.

HSH-7.94C(TS) Genuine Hirose hook with teflon base made in Japan excellent quality.

HSH-7.94C Genuine Hirose Hook & Base with C type tacking gib for light to medium materials will fit most types of standard non trimmer flat bed machines.

HSH-7.94B Genuine Hirose Hook & Base with B type full gib for general use from light to heavy materials will fit most types of standard non trimmer flat bed machines.

52237NBL=BCDB1NBL6 Universal bobbin case fitted with NBL406 spring will fit all types of flat machines Brother,Singer,Juki. Towa brand made in Japan the best quality !!