SIN-43725NBL | Bartacker Bobbin Case with NBL spring.

SIN-52237NBL (G) | Bobbin Case with NBL Spring for many Single needle Lock stitch machines.

8603 | (replaces 8654) Bobbin case (Shuttle) for Singer 29K71 +73 - S-29A ,(made in Japan)

SIN-NBL-1303 | 417269 | MF01A0245 | NBL / brake spring for "M" Bobbin Case

SIN-173058 | Bobbin Case for Domestic Singer 306K 319K

SIN-52237 | Bobbin Case for plain machine