Air chuck with large-bore valve compatibility - 1/4-inch NPT internal thread, quick-connect fitting, and closed-end design for direct use with large-bore tire valves and secure, leak-free inflation. Brass body with a robust brass shaft. - Nickel-plated finish for corrosion resistance and a clean, professional look. - Easy to use with Lock-On design: attach and detach by pulling the sleeve, delivering effortless and efficient inflation. - Compatibility: closed-end and this design are suitable for a wide range of large-bore tire valves, offering convenience and versatility. Use scenarios - Inflate cars, SUVs, and light trucks with large-bore valves for quick, reliable service at home or in a shop. - Roadside tire inflation for vehicles that use large-bore valves, providing fast top-offs. - Inflate tires on agricultural, industrial, or off-road equipment with large-bore stems that require a sturdy, leak-proof chuck.