Features: 1. Premium Quality 3000psi input-800psi Regulated output Regulators. 2. All internal parts are brass and stainless steel and all edges are beveled... even on the pin valve. 3. With Brass and Stainless Steel you never have to worry about moisture!!! 4. Exterior is dark black anodized aluminum with a black Aluminum thread protector and a rubber fill nipple cover. Regulators are supplied with a standard male foster fitting for filling. 5. The tank doesn't need to be removed from the gun to fill with air