PREMIUM MATERIALS: The main body is made of red coated aluminum and the coupler sleeve is made of black coated aluminum, durable and long lasting. SIZE: 1/4inch NPT Male thread x 1/4inch Body size, interchangeable with most manufacturers; accepts three of the most interchanges, , and T type. MULTIFUNCTION: For switching quickly between different air tools and accessories with ease during applications. COUPLER DESIGN: Six locking balls to hold the plug securely, -in coupler, fully automatic connection without pulling back the sleeve. OCCASION APPLICATION: Great for professional jobsites, in automotive shops or in the garage for air hose, air compressor, air tools, air nailer, air blow , pressure washer color:Red Material:Aluminum size:Length 5.7cm Package Contents: 12 x 1/4inch MNPT Universal Air Coupler 1 x adhesive tape Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.