1. HEAVY DUTY BRASS CONSTRUCTION make the air chucks durable and Reliable.
2. INTERCHANGEBALE AIR CHUCKS- including Clip-on chuck and Twist-on chuck in 1 package. You just choose it for different using. Clip- on chuck is much convenient, while Twist-on chuck can tightly hold the tire valve.
3. OPEN (Flow Through) and SMART DESIGN withLarge Bore,air only flows once the tire valve is engaged; Easy to Operate.
4. UNIVERSAL CONNECT TYPE ,1/4-Inch Female NPT, 3/4-Inch Hex, Fits Standard 1/4" NPT Fittings.
5. WIDELY USED AND WARRANTY; Used for large bore valves, Designed to use with Inflator and pressure gauge. LIFETIME 100% Satisfaction Guarantee.