Commonly referred to as a “4th Hand,” the Park Tool Cable Stretcher pulls cables tight for adjustment of derailleurs and brakes. It features one-hand operation with a thumb lock to hold the cable tight while your hand is freed up to tighten bolts and nuts. A must-have for any shop, home, or professional. Park Tool Cable Stretcher Features Also known as a Fourth hand, this tool speeds up work on brake and gear cables One hand operation to tighten cables, with a thumb lock to hold the setting, leaving your hands free to tighten nuts and bolts Heat treated steel, with a chrome plated finish Cushion handle grips for comfort An invaluable tool, and once you've used one you'll understand just how useful it is Made in the USA and covered by Park Tool's legendary limited lifetime warranty More info