XtremepowerUS Auto-Rewind Retractable 50-Ft x 1/2-Inch Air Hose Reel with Air Rubber Hose Air Inlet: 1/2" 18NPT Brass Coupler Working/Burst PSI: 300psi / 800psi Temperature Range: -15C(5F) to 50C(122F) Spring Powered Auto Rewind Industrial Grade Steel Construction