660mm Step Cone Drill Bits HSS Step Core, Fluted Edges, Hole Cutter Bit For Metalworking

660mm Step Cone Drill Bits HSS Step Core, Fluted Edges, Hole Cutter Bit For Metalworking Description

HSS Spiral Grooved Step Drill Bits Set Material and design: speed steel construction with spiral grooves for efficient cutting and long tool life. Deburring capability: Automatically deburrs holes as you drill, reducing finishing work. Multi size versatility: Step drill design with multiple diameters in one set to produce a range of hole sizes. Material compatibility: Suitable for drilling holes in steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet, and similar materials. Hardness tolerance: Appropriate for workpieces with hardness below about 25 on the hardness scale; examples include carbon steel and aluminum parts. Performance and reliability: Durable, speed cutting with clean hole edges and good edge quality. Use scenarios: 1) Drilling holes in metal plates or carbon steel panels in a workshop. 2) Creating holes in wooden boards for furniture assembly or cabinetry. 3) Cutting holes in PVC sheets or insulation boards for wiring or cable passes. Compatibility: Designed for use with standard drills and suitable for common drill chucks.