... nickel plated . Part number: QHM09 quick couplerFeatures:1) Female Male different thread.(NPT ,BSP,BSPT,UNF....)2) Media: Compressed ... Carbon steel with Nickel plated, Zincplated, Copper plated. Our pneumatic quick coupler and plugs are available insteel, brass, and ... be firmly fastened withhose clamps or ferrules. Pneumatic hydraulic male ,female Germany,USA ,ISO style Quick release air coupling