Durable and easy to use chrome molybdenum steel copper pipe crimping tool, 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 make it easy to extend pipes. Preservation of ductility of copper / aluminum during forging to prevent cracks and leaks. The flares will always be the same size and will fit perfectly. Description: 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 / aluminum during forging to prevent cracks and leaks. The flares will always be the same size and will fit perfectly. Size chart: Specifications: applicable pipe diameter, total length, hole depth, shank length, shank diameter 3/4": 19 mm, 63 mm, 25 mm, 31 mm, 6.35 mm 5/8": 16 mm, 61 mm, 23 mm, 31 mm, 6.35 mm 1/2 ": 12 mm, 56 mm, 20 mm, 31 mm, 6.35 mm 3/8": 9 mm, 53 mm, 16 mm, 31 mm, 6.35 mm 1/4": 6 mm, 50 mm, 13 mm, 31 mm, 6.35 mm Shipping color: black Shipping Quantity: 5 pieces/set