Plastic Bobbins for your boat shuttles. Fit Schacht, Bluster Bay and many other shuttles without modification.

Choose the White 4" (overall length is 4.5"), the 5" (overall length is 6"), or the 6" (overall length is 6.75") - They all have ¼" shaft holes.

You can easily trim the ends off to gain about a half inch of extra clearance if needed. The Wood bobbin at the bottom is 4" with a ¼" shaft hole. The blue plastic Ashford bobbin (now made in beige - not blue) at the top is 4½" long with a smaller 3/16" shaft hole.