7 Pc. ¼” NPT Flexzilla Pro High Flow Interchange Coupler and Plug Kit Flexzilla Pro High Flow couplers and plugs allows twice the flow to your air tools. Connect Flexzilla High Flow fittings from your tool all the way to the compressor. This ensures the best performance your air system can provide. Push-to-connect. Ideal for spray guns and impact tools. Increased efficiency. Maximum torque. Maximum RPM. Best performance. Includes:. (1) FNPT Coupler. (1) MNPT Coupler. (2) FNPT Plug. (3) MNPT Plug A53457FZ Yes - NICKEL (METALLIC)