Fdit Spiral Step Drill Bit HSS Cobalt Step Drill Spiral Step Drill Bit High Speed Steel Cobalt Hex Shank Steps Drills M35 9 Size 4‑12mm

Feature: 1. M35 Grade Cobalt Steel: Made of strong M35 grade cobalt steel with 5% cobalt added to form a hardened heat resistant alloy with longer life 2. 9 Size Ranges: With 9 size ranges from 4mm to 12mm you can use one drill bit to drill up to 9 holes of different diameters saving your time and effort to replace the drill bit 3. Application: Very suitable drilling new holes or expanding existing holes on stainless steel and softer metals such as iron brass copper aluminum etc. 4. Greater Torsion: This 1/4in hex shank drill bit can be clamped tighter by compatible drill bits and screwdrivers to achieve greater torsion 5. Chip Removal: This is a M35 cobalt containing step drill which can open holes quickly cut faster and remove chips smoothly. Specification: Item Type: Spiral Step Drill Bit Material: High Speed Steel Containing Cobalt Purpose: Spiral Step Drill Shank Type: Hex Shank Shank Diameter: 1/4in Drilling Diameter: Approx. 4-12mm / 0.16-0.47in Package List: 1 x Spiral Step Drill Bit