Description Description Alpha ThunderMax Step Drill Spiral Flute - 4-12mm Metric 9 Steps 4, 5, 6, 7, 8, 9, 10, 11 & 12mm 6mm Hex Shank Bulk - 1 piece convenient plastic pack Self-Starting Split Point removes the need for a pilot hole Tempered Black Finish maximises lubricant hold, therefore assisting chip flow & heat dissipation 2 flute design for smooth cutting Laser etched hole ø Corrosion resistant finish 3 flats on shank, prevents slippage in chuck -- Ideal for: Non-ferrous metals, sheet metal and plastic up to 3mm thick. Stainless steel up to 1.5mm thick. Suits: Non-hammer action portable power drills. Cutting Speed: 400 – 1,500 RPM. View AllClose
