Description: [High Quality Material] Our quick coupler adapter is made of brass material, which is sturdy and durabl e to use. [High and Low Adjustment] This quick coupler adapter has Adjustable rotary switch for high and low adjustment. It has 1/4inch male thread flare and precise snap lock and knurled clamping ring. [Quick Connection] Our product is quick to connect and use.Different colors help you quickly distinguish. The detachable adapter is for easy maintenance. [Easy to Use] Please connect the bottom with the service port of the vehicle. . Detailed description: Product Name: Quick Coupler Adapter Material: Brass Color: Red/Blue Parts List: 1pair Quick Coupler Adapter