Easy to connect: Used to expand copper pipes, making them expand and easy to connect.High quality material: This pipe expander kit is made of high-quality steel, which is wear-resistant, not easily deformed, and durable.Attention: When installing the air conditioner, the pipe expander should be installed on the hand drill and the copper pipes should be unfolded to connect the two copper pipes to each other.Easy to carry: Small in size, easy to carry when going out, such as installing outdoor air conditioning.Multiple uses: can be used for air conditioning equipment, refrigeration equipment, automotive air conditioning, etc.Project specifications:Package included: 1 setMaterial: Bearing steelApproximate dimensions: specification width: 7/8 (22.2mm), 3/4 (19mm), 5/8 (15.9mm), 1/2 (12.7mm), 3/8 (9.5mm), 1/4 (6,3mm) height: 4.5 centimeters for 1/4 and 3/8 heights; The height of 1/2 and 5/8 is 5cm; The height of 3/4 and 7/8 is 5.5 centimetersProduct features:Easy to connect: Used to expand copper pipes, making them expand and easy to connect.Attention: When installing the air conditioner, the pipe expander must be installed on a handheld drilling rig and the copper pipes must be unfolded to connect the two copper pipes to each other.High quality material: This pipe expander kit is made of high-quality steel, which is wear-resistant, not easily deformed, and durable.