This 18 piece Air Tool accessory service kit has it all. The connectors are solid brass and the kit fits 3/8" air hose and works with just about any compressor. Coupler set has 1/4 NPT fittings.Our high quality kit features: Chrome plated air blow gun with non-corrosive trigger, Quick coupler, Female connector, Male connector, Universal adapter, Valve repair tool, Safety nozzle, Tapered Rubber tip, Tapered Chuck, High Pressure nozzle, Needle Chuck, Large Bore Valve Core, Screw-on Chuck, Air Gauge, Chuck adapter, Dual Tire Chuck, Power Wire Brush, Tire Gauge