Flexible Heavy Duty Nylon Hose to reach difficult areas Prevents excess of grease when the nozzle is at a small angle to the grease fitting To be used on hand operated grease guns only 1/8" NPT Female and Male End can fit all standard grease guns The Cal-Hawk Grease Hose can be used to reach areas that are difficult to reach. Heavy-duty nylon hose, flexible and pliable construction prevents cracking or breaking. The specialized design prevents an excess of grease. Extension female thread: 1/8" NPT. Male Thread: 1/8" NPT