Drillpro HRC89 AlTiN Coating Step Drill Bit 4-20mm HSS M35 Cobalt Step Cone Drill Bit Hole Cutter

Product Description

Description:Drillpro HRC89 AlTiN Coating Step Drill Bit 4-20mm HSS M35 Cobalt Step Cone Drill Bit Hole Cutter

Specification:Module: DrillproMaterial: HSS-Co/M35Coating: AlTiN CoatingHardness: HRC89Step: 9 stepsSize: 4, 6, 8, 10, 12, 14, 16, 18, 20mm(4-20mm)Shank Size: 1/4" Hex Shank

Features:1. Hardness up to HRC89, perfect to drill 304 stainless steel, wood,  iron, aluminum alloy, insulation boards, PVC sheet.2. Industrial Grade TiALN Coating,TiAlN coating surface will form Al2O3 which form a hard protective layer when drilling.(Perfect for high speed drilling)3. Service life is 5-10 times longer than general step drill. (Can drilling without coolant, with coolant, service life will be longerand performance will be better.)4: 118° X Bit Design, you can drill from any angle, no slipping.5: Great chip removal, small resistance, geat heat dissipation.6: HIgh precision, no burr when drilling.7: Easy to install

Package Included:1 x Drillpro HRC89 AlTiN Coating Step Drill Bit 4-20mm