Counter-Strike Keyset - This Counter Strike keyset showcases official game graphics and has an abundance of game specific keys such as: Quick Buy Zone - easy to reach buy menu keys for swift weapons and equipment purchases, 12 Quick Radio buttons to simplify in game communications, Dedicated X-Fire in game button, Dedicated GGL button for quick access to competitive tournament play. Best of all, it is compatible with Counter Strike, Counter Strike Condition Zero and Counter Strike Source.