USF Bulls Golf Repair Tool & Ball Marker - the patent pending CVX® ball mark repair tool utilizes a 19º angle and convex curve to promote the correct forward motion to properly repair ball marks. The CVX® ball mark repair tool is ergonomically designed for comfortable and secure finger and thumb placement. The CVX® ball mark repair tool also features a magnetic front for two interchangeable ball markers embellished with USF Bulls Team Logo. by Team Effort Inc.