Spring lock for Optimist mast steps from Optiparts. This stainless steel spring prevents the nut from turning accidentally. There is no need for additional locking nuts anymore.
EX3008 Clinometer Windesign Sailing
EX1209 Optimist Low Friction Deck Collar
EX3008 Clinometer Windesign Sailing
EX1209 Optimist Low Friction Deck Collar