【360° Swivel Quick Plug】: 360° swivel air couplings swivel flexibly without tangling, preventing hose twisting and increasing mobility, relieving strain on wrists and air hoses, and are ideal for use with pneumatic tools. 【Closed Ball Clip-on Air Chuck】: Closed ball tire chuck with clip with 1 x 360° swivel quick plug and 1 x 1/4" MNPT air chuck quick plug. Air chucks for tires design helps to easily lock the commonly Schrader Valve. To use, simply clip it onto the tyre valve to inflate, freeing up your hands! 【2-Way Easy Connection】: Both air chucks featured standard US 1/4" NPT thread for easily connected to air lines, air compressor or tire inflator gauges for tire inflation. Also can be connected to air lines' female quick couple by male plug included in package. (Please use the included sealed raw tape to prevent leakage) 【All Durable Metal Design】: Right angle tire chuck constructed with high quality metal alloy for higher strength and durability, corrosion resistance and wear resistance, which is a perfect choice no matter for business or household use. 【Wide Application】: Lockable air chucks for tires Not only for dual wheels also ideal for conveniently inflating other tires with schrader valve, such as semi, trucks, Rv, buses, bikes, motorcycle, car. Great tire inflator and gauge air compressor accessories & air compressor attachments, etc. air chuck2 closed ball clamp pneumatic chucks, a Teflon tape, a 360° swivel joint and a MNPT standard American fitting. Made of heavy duty high quality metal alloy for greater strength and durability, corrosion and abrasion resistant, it is your best choice for both business and home use, both pneumatic chucks are made with standard American 1/4" NPT threads, which can be easily connected to an air line, air compressor or tyre inflation gauge to inflate tyres. They can also be connected to a female quick coupler on the air line via the male plug included in the package. (Use the included sealing raw tape to prevent leakage) The included steel locking clip provides a more ergonomic angle. To use, simply clip it onto the tyre valve to inflate. The clip locking design helps to easily lock commonly used Schrader valves. Free your hands! Two connection options to suit your needs. Maximum air pressure up to 250 PSI, not only for dual wheels, but also for other tyres with valves, such as semi-trailers, trucks, caravans, buses, bicycles, motorbikes, cars, etc. Excellent tyre inflation gauge and air compressor attachment etc. If you are looking for a durable pneumatic chuck set, this is perfect for you.