For use with any sewer jetter, the compact 150ft Handy-Reel can be attached to a gas jetter so you can use the power of the gas-powered water jetter inside a building. Or it can be taken up on a roof to clear vents while your sewer jetter remains securely on the ground below. The foot pedal gives you added safety. Water flows when you step on the pedal and stops when you lift your foot, so you have both hands free at all times to control the hose.