Patented CVX ball mark repair tool utilizes a 19 angle & convex curve to promote the correct forward motion to properly repair ball marks (US Patents 7,611,426: D637,677 and other patents pending) | The CVX ball mark repair tool is ergonomically designed with custom contoured rails for comfortable finger placement, and a textured indent for secure thumb placement | The magnetic front holds your ball marker in place | The set includes two iron stamped ball markers | Officially Licensed