Orbitkey Accessories Collection Quick Release Zinc Alloy Fidlock & Quick Start Guide. The quickest and easiest way to access your keys. Streamlined design for comfort. Secure magnetic Fidlock® quick release system. Easy-to-use open D-ring. Clip on to belt loop and bags. Length (including the Clip): 105mm / 4.13" Length (Clip only): 57mm / 2.24" Width: 35mm / 1.38" Height: 11mm / 0.43"