Durable and easy to use chrome molybdenum steel copper pipe crimping tool, your good helper for work and life. 5 pieces or set, with 5 different sizes (1 or 4 3 or 8 1 or 2 5 or 8 3 or 4) for your choice to meet your needs. Ideal for installers. A full range of forging tools make it easy to extend pipes. Preservation of ductility of copper or aluminum during forging to prevent cracks and leaks. The flares will always be the same size and will fit perfectly. Buy products, we make our effort to give you more protection so that you can enjoy a better life. - Durable and easy to use chrome molybdenum steel copper pipe crimping tool, your good helper for work and life. - Ideal for installers. A full range of forging tools make it easy to extend pipes. - Preservation of ductility of copper or aluminum during forging to prevent cracks and leaks. - The flares will always be the same size and will fit perfectly. - 5 pieces or set, with 5 different sizes (1 or 4 3 or 8 1 or 2 5 or 8 3 or 4) for your choice to meet your needs. Size chart: - Specifications: applicable pipe diameter, total length, hole depth, shank length, shank diameter - 3 or 4 ": 19 mm, 63 mm, 25 mm, 31 mm, 6.35 mm - 5 or 8 ": 16 mm, 61 mm, 23 mm, 31 mm, 6.35 mm - 1 or 2 ": 12 mm, 56 mm, 20 mm, 31 mm, 6.35 mm - 3 or 8 ": 9 mm, 53 mm, 16 mm, 31 mm, 6.35 mm - 1 or 4 ": 6 mm, 50 mm, 13 mm, 31 mm, 6.35 mm The package Includes: Crimping drills for tube expanders, 5 pieces. Note: Color may be slightly different due to the color calibration of each individual monitor. Please allow slight measuring deviation due to manual measurement.