Chain Wrench Replacement Part, Chain Assembly, Used with C 18 C 24 no checkout and cables or to find and cables or to find a break in a wire Patented automatic self test verifies the integrity of the unit Bright LEDs flash and audible alarm sounds if voltage is present Silent mode feature for use in quiet settings Automatically turns off after five minutes of non use to conserve battery life Comfortable textured cushion pistol grip will not slip in wet or oily hands Sides will not attach to unwanted metal surfaces Mirror with metal base mounts to MegaMag® in seconds to bring hidden areas into full view Keeps piping tightly in place without the need to clamp down and the risk of compression Replaces worn or over stressed chains Easy to install