Starter, counter clockwise rotation with 10 splines. A fairly universal design most commonly (though not exclusively) used for the smaller Polaris ATVs (Sportsman 50, Sportsman 90, Scrambler 50), Yamaha ATVs (Raptor 50) as well as a vast number of clones, rebrands and other makes. Number of Mount Holes: 2. Number of Splines: 10. Rotation: Counter Clockwise