Parker Hannifin B20-5B Series 20 Brass General Purpose Pneumatic Quick Coupler with Standard Hose Barb, Industrial Interchange, 1/4" Body Size, 3/8" Hose ID, 2.49" Length

20 Series Quick Couplers (pneumatic, air) up to 300 psi connect with Industrial Interchange Nipples. Couplers are manual sleeve, single shut off couplers that mate with nipples conforming to A-A-59439 (MIL-C-4109F, ISO 6150-B) standards. 20 Series couplers have steel, tubular style valves that deliver high flow with minimal pressure drop. An integral sleeve guard helps to resist accidental disconnection when in use.