MECCANIXITY 90 Degrees Elbow Copper Pipe Fitting Short Turn Brazing Connection 1/2 Inch ID for HVAC Cooling Solar Equipment, Pack of 3

What is this?90 degrees elbow copper pipe fittings are mainly used for cooling solar devices, HVAC air-conditioning devices, cooling hydraulic systems, above-ground water supply pipes, etc.What will I get?Package Content: 3pcs x 90 Degrees Copper Fitting; Small Inner Diameter: 10.7mm / 0.42 inch; Big Inner Diameter: 1/2"(12.7mm / 0.5 inch); Size(LxW): 35 x 35mm / 1.38 x 1.38 inch; Thickness: 1mm / 0.04 inchAre there any advantages of the product?Made of copper, thick wall, corrosion resistance, high temperature and pressure resistance, fast heat dissipation, high surface gloss, uniform density, not easy to break, and long service life.How to use it?Easy to assemble and disassemble.What should I notice?Please confirm the inner diameter before ordering.