What is this?Copper pipe fittings are used to connect pipe components of copper pipes, soldering pipe copper end cap is widely used in closing off pipes.Mainly for HVAC air-conditioning devices.What will I get?Package Content: 5pcs x Pipe Copper End Cap; Inner Diameter: 38mm / 1.5 inch; Length: 8mm / 0.31 inch; Thickness: 1.2mm / 0.05 inchAre there any advantages of the product?Made of copper with good toughness, stable performance and long service life. Light external surface, accurate size.How to use it?Prepare the water pipe or other device which needs copper caps. Wraps them and soldering.What should I notice?Please confirm the inner diameter before ordering.