Standard nylon mast collar or mast step ring for Optimist dinghies, manufactured by Optiparts. This ring is essential for securing the mast to the Optimist or preventing damage caused by the mast on the step, whether it's made of wood or fiberglass. A version with a mast ring and longitudinal adjustment is also available!
- Diameter of the mast step hole: 53mm
- Inner diameter: 45mm