Tube Expander Hydraulic Tube Expander Manual Tool for Air Conditioning Copper Tubes with Cup-Type Mouth Model CT-300A Precision craftsmanship ensures uniform expansion of the tube surface Precision-engineered expansion pliers head with high density and no impurities, resistant to breakage Alloy expansion pins with anti-slip handles for comfortable grip Suitable for outer diameters of 3/8“, 1/2”, 5/8“, 3/4”, 7/8“, 1”, and 1-1/8" Suitable for outer diameters of 10, 12, 16, 19, 22, 25, and 28 mm