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. Quickly installs needle inserts with a squeeze of the handle. 2-way clamp fits 5.0 and 5.5mm hydraulic hose and features adjustable tension. Needle Starter pin to quickly and confidently set needle insert into hose. Textured handle grip for comfortable operation. For use with unthreaded needle inserts.