Check the listing for details. 3-1/2 Inch ID Copper Pipe End Cap, Copper Fitting Cap Sweat Plug Connection. Condition: New. Listed at 30.39 USD. These copper pipe end caps are widely used on water plumbing, air conditioner, heat pump system, and refrigeration system. It is a hardware for sealing the end of your copper pipeline.Specification:Color: Copper ToneMaterial: CopperInner Diameter: 89 mm / 3-1/2 InchLength: 16 mm / 0.63 inchThickness: 2 mm / 0.08 inchOuter Dia.: 94 mm / 3.7 InchPacking List: 1 Pcs x Copper Pipe FittingAdvantage:The copper pipe end cap is made of copper material, with good thermal conductivity. Have a good performance on transferring the Heat.Smooth surface and no burrs.Instruction:Cleaning the connection surface, and then soldering to install.NOTE: All the sizes mentioned are actual sizes, not the nominal pipe size, please confirm the size before ordering.