This heavy-duty retractable air hose reel is equipped with a 3/8 in. x 50 ft. rubber main hose and a 5 ft. lead-in hose to eliminate messy tangled lines and floor dragging, greatly lowering abrasion and tripping risks in workshops and garages. Rated for 300PSI maximum pressure, the high-quality rubber hose operates steadily between 23℉ and 113℉ with outstanding resistance against twisting, crushing and bursting to maintain stable airflow. Featuring a sensitive auto-rewind system, the hose retracts smoothly with a light tug, while the built-in ratchet lock and adjustable stopper allow free length positioning. Non-snag rollers, spring guard and rubber protective sleeve minimize daily wear and tear. Upgraded solid steel dual-arm structure delivers balanced and stable support during stretching and retracting. It supports flexible ceiling, wall and workbench mounting, ideal for various pneumatic tool applications and industrial daily use.