MaxLine RapidAir 3/4" Tubing End Cap Fitting Compressed Air Piping Plug M8027 Brand new M8027 3/4" MaxLine tubing system end cap fitting. This is designed to be used with 3/4" inner diameter RapidAir MaxLine air piping systems. This fitting attaches to the end of the air tubing and blocks the flow. This fitting is used to plug or cap off the end of the MaxLine tubing; typically, this is used when you leave a section of pipe for future air line additions or are not done with assembly but want to pressurize the system. Features & Specifications: Fits MaxLine 3/4" Tubing Air Tight Seal Caps Tubing for Future Additions Solid Brass Nickel Plated Part Number: M8027 Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.