This MERLIN™ 3/8 in. x 50 ft. Heavy Duty Retractable Air Hose Reel has an easy-to-set tension adjustment for effortless use. Unwind the length of hose you need and it locks in place. A simple tug rewinds the hose on the reel for trouble-free storage. Change the adjustment to suit the way you work. A 50 ft., 3/8 in. diameter MERLIN™ premium PVC/rubber hybrid air hose is included.