The Ashford Boat Shuttle Bobbin Winder is the perfect tool for winding bobbins for the Ashford boat shuttles. The tapered stainless steel shaft and nylon bearings ensure smooth and precise operation, while the tapered spindle diameter (4 - 5.5mm) ensures a snug fit for your bobbins. The natural finish gives this winder a classic look, and the 12:1 ratio means you can wind your bobbins quickly and easily. The included clamp means you can mount this winder to your work surface for added stability, and the 1 x boat shuttle bobbin means you can get started right away!