Features: * Fits Surefire 6P G2 Fenix TK series Olight M20 M30 M22 and all tactical lights with 1" diameter * Compatible with all Weaver Picatinny style rails * Easy to put on and take it off and mount securely with the spring loaded quick release lever * Flashlight lock and quick release tension adjustment secure the light tight * Aircraft aluminum with a black anodized finish for long lasting performance * 1 year product warranty Install a Flashlight: * Insert 1" flashlight tube into the ring. * Tight the flashlight locking screw with the allen wrench included in the package Mount to the Rail: * Unlock the quick release lever * Clamp the mount onto the Picatinny or Weaver rail * Lock the quick release lever. Tighten the quick release tension screw * Unlock the quick release lever. Further tighten the quick release tension screw 10-15 degree.