Ballistic model 335132  pressed in hub for 15 spline with 4 1/4" gear case. Mercury 40 BF up to 140hp, some Yamaha and if you check with a prop chart might fit on some Honda/Suzuki with 15 spline shaft with the right hardware. Make sure to check a prop chart for proper fitment. One small ding on one blade, about 1/2" long, will pound out.