About this item Material: copper tube stamping tool drill bit made of high carbon steel, durable and easy to use, your good helper for work and life. 5-piece set: 5 pieces/lot with 5 different sizes (3/4", 5/8", 1/2", 3/8", 1/4") to meet to your needs. Stamping tool: a product of the stamping process with this tool that paves the way in all lines of HVAC systems. Function: preserves the ductility of copper/aluminum during cutting to prevent cracks and leaks. Application: Ideal for installers Good performance and long life, full range of forging tools make it easy to expand of pipes. Description: Material: copper tube punching tool drill bit made of high carbon steel, durable and easy to use, your good helper for the work and life. Application : perfect for installers. Good performance and long service life, full range of forging tools make it easy to expand pipes. Function: Preserves the ductility of copper/aluminum during cutting to prevent cracks and leaks. Precise: The tapers will always be the same size and will fit perfectly. 5-piece set: 5 pieces/set with 5 different sizes to meet your needs. p> Features: Material: High carbon steel. Black in color. Size: 3/4", 5/ 8", 1/2", 3/8", 1/4". Overall length Working length Shank diameter 3/4 63 / 2.48 27 / 1.06 1/4 5/8 61 / 2.4 25 / 0.98 1/4 1/2 56 / 2.2 20 / 0.79 1 /4 3/8 53 / 2.09 16 / 0.63 1/4 1/4 50 / 1.97 14 / 0.55 1/4 Quantity: Pack of 5. Package Contents: Pack of 5 Hose Extensions.