Lending a hand this fourth hand pulls gear and brake cables tight with one handle freeing the other for clamp bolt tightening duties key 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 youve used one youll