The SpeedFreek is a gaming accessory designed to increase the comfort and precision of your analog sticks on the Xbox 360 controller. This product will fit both analog sticks but was designed for games that require more left analog action then right. The SpeedFreek's design was initially aimed at the Racing Game Genre but has been tested and proven to increase comfort and precision in all types of games. This product has been tested with titles like Gears Of War, Project Gotham 3, Forza 1, MotoGP, RalliSport 2, Test Drive Unlimited, Rainbow Six Vegas, Ghost Recon Advanced Warfighter 2, Worms, Oblivion, and others.