ITEM NAME:4pc Copper Pipe Swaging Tool Cross Screwdriver Drill Bit Aluminum Tube Expander Description Specification: Brand new Material: High speed steel Working Length: approx. 58mm/3.15in Handle Length: approx. 25mm/0.10in Hex Handle Diameter: approx. 6.35mm A: Metric Expander swaging bit size range (approx.): 6.35mm/0.25in swaging bit 9.5mm/0.38in swaging bit 12.7mm/0.5in swaging bit B: Inch Expander Swaging Bit Size Range (approx.): 6mm/0.24in swaging bit 9mm/0.36in swaging bit 12mm/0.48in swaging bit Feature: The copper pipe swaging drill bit features the high-strength high-speed steel. Can be directly connected to the electric drill interface. The copper pipe swaging drill bit is suitable for pipe diameters between 6mm-12mm/0.24-0.47in(about). The copper pipe swaging drill bit can an inserting auxiliary tool (cross screwdriver, etc.), which can be used as a manual tube expander. High strength and hardness. Easy to use. Durable in use. Package Included: 4pcs x Swaging Tool Bits (A, B each 2pcs) Note: Please allow 1-3mm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same..6.35mm/0.25in swaging bit. 9.5mm/0.38in swaging bit. 12.7mm/0.5in swaging bit. 6mm/0.24in swaging bit. 9mm/0.36in swaging bit. 12mm/0.48in swaging bit. The copper pipe swaging drill bit features the high-strength high-speed steel.