The SUPER48 Heavy Duty Retractable Keychain was built for rugged use and hard work. The durable black polycarbonate case is impact resistant, and the retractable cord made with DuPont™ Kevlar® fiber is guaranteed to outlast any other retractable key holders on the market. Attach your keys or small tools to the oversized split ring and secure the clip to your belt. When you need your keys just pull them out, when your done let them go and the built-in tether retracts back into place, secure the ball-joint lock until you need them again. When you need a heavy duty key holder to secure a large number of keys, the SUPER48 Heavy Duty Retractable Keychain your best choice.