Nakashima Propeller is a Japanese propeller manufacturer.
For sailing yacht 25-30 ft 20-30 hp Prop has 1 1/4 s.a.e taper.
We also have shaft taper reducers to 1 1/8, $45
You can see our pacific propeller website.
A price guide for 3 and 4 blade props are on the last photo.
Simply select your diameter to show approx price. Now stocking many Nakashima propellers in Nibral, Nickel aluminium bronze, $750 delivered
We also hold Australia largest range of sail drive props for sailing yachts in aviation grade aluminium.
You can call or email for propeller calculations . Ask for Steve Evans