Only for air inlet nipples 10 mm for large 12.5 mm (1/2 inch) cables. Air inlet thread (inside thread) 20.95 mm (1/2 inch). Safe disconnection of the connection (unwanted disconnection is excluded). No risk of injury from hose impact. Safety coupling depressurizes the connection before decoupling. Working range: 0 – 50 bar. One-hand operation with little effort during coupling and decoupling. Omission of loud popping during the coupling process. Easy operation, even with gloves. Made of hardened steel, galvanized. Air connection outlet: Coupler bushing for type 1, 2, 3, 4. Surface: nickel-plated. Temperature range: -10°C – 60°C.