3/8" I.D. Made from lightweight neoprene which is more flexible than standard hose even in extreme temperatures. Absorb shock to air couplers from impact tools and/or air hammers. Fitted with a full 360 deg. 1/4" Male swivel fitting and a 1/4" Female brass fitting for greater flexibility and easier use. Burst strength: 1000 lb. Maximum working pressure: 250 P.S.I. 30".