The most popular round type maststep for the Optimist
dinghy. This Optimist maststep has an oval cup, which allows the mast to tilt
forward when going downwind. Different mast rakes can easily be repeated using
the scale on the base. Separately a mast step spring lock can be purchased. The
stainless steel spring prevents the nut from turning accidentally. There is no
need for additional locking nuts anymore.