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, refrigeration system, heat pump water heater, water pipe plumbing and so on. The specification of our product is: Package Content: 30pcs x Pipe Copper End Cap; Thickness: 0.5mm / 0.02 inch; Overall Size: 9x20mm / 0.35x0.79 inch (H*D) Made of copper with good toughness, stable performance and long service life. Light external surface, accurate size. Prepare the water pipe or other device which needs copper caps. Install them and soldering. Please confirm the size before ordering. 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, refrigeration system, heat pump type water heater, water pipe plumbing and so on. What will I get? Package Content: 30pcs x Pipe Copper End Cap; Thickness: 0.5mm / 0.02 inch; Overall Size: 9x20mm / 0.35x0.79 inch (H*D); Fit for 5/8" Flare Nuts Are 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. Install them and soldering. What should I notice? Please confirm the size before ordering.