Note that the Ball Air Chuck With Air Plug are US NPT standard threads with a 60 degree taper., Product introduction: 1., NPT female and male threads are hard connected and do not require sealing in most cases., 2., For air pumps and compressor accessories, also can be used for trucks, buses, cars, bicycles, motorcycles and more., 3., The threads are smooth and clear, easy to install, and a sufficient number of threads are designed to ensure that the joint is stronger after tightening and prevent loosening. Solid Brass Ball Foot Closed Flow Air Chuck Tire Inflator Filler 1/4... Yenoz 2 PCS Brass Closed Flow Tire Chuck, 1/4 FNPT Tire Air Chuck... Compatible with industrial/M/D type Quick Connect Air Couplers, and it is interchangeable with most manufacturers, Suitable for commercial and industrial air filling applications. Fittings are threaded or unthreaded and come in many shapes, styles, sizes and schedules (wall thickness) PACKAGE INCLUDED: 2 x 1/4 NPT Ball Air Chuck With Air Plug 1 x Teflon tape Material - Brass & hardened steel structure for longer service life, strong wear and corrosion resistance, high compressive strength and durability. SIZE - 1/4 NPT Closed Ball Air Chuck With 1/4'' NPT Air Plug. WORKING PRESSURE - 300PSI maximum working pressure. Air Chuck Spurtar Closed Ball For Tires Air Compressor Attachments... Tire Inflator For Air Compressor ChillWaves 1/4-Inch Male Industrial Coupler,1/4 NPT Male 4...