Chrome molybdenum steel copper pipe crimping tool, durable and easy to use, your good helper for work and life. 5 pieces/set, with 5 different sizes (1/4 3/8 1/2 5/8 3/4) for your choice to meet your needs. Ideal for installers. A full range of forging tools makes tube flaring easy. Preserving the ductility of copper/aluminium during swaging to prevent cracking and leakage. The bell-bottoms are always the same size and fit perfectly. Description: Chrome molybdenum steel copper pipe crimping tool, durable and easy to use, your good helper for work and life. Ideal for installers. A full range of forging tools makes tube flaring easy. Preserving the ductility of copper/aluminium during swaging to prevent cracking and leakage. The bell-bottoms are always the same size and fit perfectly. 5 pieces/set, with 5 different sizes (1/4 3/8 1/2 5/8 3/4) for your choice to meet your needs. Size chart: Specifications: applicable tube diameter, overall length, hole depth, rod length, rod diameter 3/4": 19mm, 63mm, 25mm, 31mm, 6.35mm 5/8": 16mm, 61mm, 23mm, 31mm, 6.35mm 1/2": 12mm, 56mm, 20mm, 31mm, 6.35mm 3/8": 9mm, 53mm, 16mm, 31mm, 6.35mm 1/4": 6mm, 50mm, 13mm, 31mm, 6.35mm Package includes: Crimp bits for tube expanders, 5 pieces. Note: The color may vary slightly due to the color calibration of each individual monitor. Please allow slight error due to manual measurement.