Features a full CNC-machined aluminum main construction for maximum quality and durability The diaphragm gauge offers excellent accuracy and is encased in a tough composite matrix that also improves grip Unique zero-loss chuck design releases the valve pin, which seals the shock, before the pump threads off Ergonomic handle and 400psi max Analog SV 400psi Black/GoldUPC/EAN/GTIN: 4712805986668