Features and Benefits: BASIC FLOW SIZE: All 1/4-in body size air fittings. 1/4-in NPT. Buna-N seals. Couplers for air shop use; KWIK-CHANGE: Interchangeable/compatible with most manufacturers; MAXIMUM: 40 SCFM. 300 PSI. Temperatures up to 250 degrees F; QUALITY: Durable brass couplers. Case-hardened steel plugs, plated to resist rust and corrosion; M-STYLE KIT INCLUDES: (2) Female Couplers, (8) Male Plugs, and (2) Female Plugs. Milton #715, #727, #728;