8milelake Retractable Air Hose Reel Auto Rewind 3/8" x 25' Compressor 300 PSI (Red) Spring driven, automatic rewind, with locking ratchet mechanism(eight locking positions per revolution) Brass connectors on hose and reel Air hose size:3/8"x25 Reel air inlet(F):1/4", 3/8"NPT Air hose outlet(M):1/4", 3/8"NPT