http://cgi.ebay.com/ebaymotors/Nice-MICHIGAN-WHEEL-High-Altitude-15-1-2-x-15-Boat-Prop-_W0QQcmdZViewItemQQhashZitem588f4e6f50QQitemZ380361404240QQptZBoatQ5fPartsQ5fAccessoriesQ5fGear what do u think this fits?