Item Type: Spot Weld Cutter Set Material: High-Speed Steel Color: Black + Silver Length: Approx.75mm / 2.95in Shank Diameter: Approx.7mm/0.28in Cutting Blade Diameter: 3/8in Cutter Bar Size: Standard 1/4in Weight: Approx.87g/3.1oz Package List 1 x Cutter Drill with Double Cutter 10 x Extra 3/8in Cutters 2 x Pilot Pins 1 x Plastic Packing Box 1. Please allow 1& 8209;2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1Doublesided 3/8in heavy duty high speed rotation metal cutting blade made from highquality heat resistant steel. 2Perfect size, 3/8in diameter cutting blade is ideal for removing spot welds. 3Easily separate, spot weld cutter drill bit for easily separate spot-welded panels without distorting the sheet metal. 4The 3/8in cutting spot welds remover fits most 1/4in drills, arbor with flats to eliminate rotation in chuck. 5Suitable for thin stainless steel sheets, iron sheets, aluminum sheets, F.R.P or other thin metal sheets.