ACME 1215 3 Blade 12.5" x 13" Propeller Hero Multiple fin set ups let your Multiple fin set ups let your grom customize the ride as their ability improves or changes… Single fin for classic skimming The next generation of girls are learning how to ride on the Ronix August 5" x 13" Propeller is a true performer thanks to ACME's continued devotion to push the ski and wakeboard boat propeller industry to new heights inboard props are helping ski and wakeboard boats achieve performances never before seen The ACME 1215 3 Blade Propeller will perform up to and surpass the standards you expect from the moment you pull it out of the box and put it on your boat