The Freeman Z1438IBC 1/4 in. x 3/8 in. Industrial Barbed Quick Connect Coupler and Air Hose Repair Kit with Clamp provides a strong connection for your pneumatic tools and air hoses. The 4 ball connector gives a quick and secure connection while the in-line valve keeps the nose pressurized when disconnected and reduces whip. This air tool accessory uses high quality zinc and stainless steel construction for long lasting durability. The light weight of the parts reduces fatigue while working. Features include a a 3/8 in. barbed fitting and adjustable stainless steel hose clamp, a 1/4 in. snap-in industrial style fitting for easy use, as well as a protective collar to prevent accidental disconnects.