Installing hydraulic hose fittings shouldnt be done using a hammer. The Jagwire Pro and Sport Needle Drivers ensure proper alignment of the needle fitting, making installation quick and easy. Screw to install needle fittings flush with the cut end of hydraulic hose. Includes double-ended bits for standard needles as well as T8 and T10 Torx fittings. Features adjustable clamp tension to ensure the hydraulic hose is secured.