DIY Step Drill 6 Piece High Speed Steel Step Drill Set Automatic Center Punch Nano Blue Coating Empire Core Drill Aluminum Box

Only a small amount of pressure and deburring are required to cut steel, and other surfaces when drillingFeature:1.100% 2. Made of high-quality high-speed steel, wear-resistant, not easy to rust, long service life.3. Smooth hole edge, very suitable for drilling holes in HVAC work.4. Prevent metal scraps from flying around to improve safety.5. Suitable for cutting holes in steel, brass, wood, plastic and other materialsspecification:Type: core drill + center punchMaterail: HSS high-speed steelCoating: Nano blue coatingSize: 3 / 16-1 / 2 1 / 8-1 / 2 1 / 4-3 / 4 3 / 16-7 / 8 1 / 4- 1-3 / 8note:Due to manual measurement, please allow an error of 1-3mm.Due to the differences between different monitors, the picture may not reflect the actual color of the project.Package Included:5 step drills + 1 center punch

• The drill tip can provide fast and stable drilling on steel, aluminum, wood, plastic, etc. (the plate thickness must be less than the height of the step drill bit).
• 1. Made of high-quality high-speed steel, wear-resistant, not easy to rust, long service life.
• 2. Smooth hole edge, very suitable for drilling holes in HVAC work.
• 3. Prevent metal scraps from flying around to improve safety.
• 4. Suitable for cutting holes in steel, brass, wood, plastic and other materials