Features: 2-In-1 Design: 2-in-1 multifunctional chuck with the function of checking pressure and inflation. Easy Operation: The tire chuck adopts a push-in chuck design, no need to thread the chuck onto valve stems, just push the chuck onto the valve for a nice seal. Safe Tool: Safe to use, take up little space and easy to clean. It is a useful item for locking on to the stem for tire inflation without using hands. Wide Use: With 1/4 inch female national pipe threads, the chuck can be applied for trucks, buses, cars, motorcycles, bicycles, etc. Product Dual Head Chuck Inflator Tool for Truck RV Bus. Heavy duty structure, make the chucks durable and reliable. Dual head provides inflation from either side and easy access to tire valve stems. Its designed for dually tires on trucks, RVs, buses and more. 1/4" Female NPT threads fit most air inflators or gauges. Specification: Condition: New Material: Stainless Steel Color: Silver(as pictures show) Size: Length approx.: 16cm/6.4 inches UniversalFitment=YES Package Include: 1/2Pcs Chuck Friendly Tips: The size is measured by hands, please allow error of measurement. Photo color might be a little different from the actual product due to color display of different monitors.