C.K Tools HSS Step Drill Bit 6-20 mm T3010 1 with Cylindrical Shank

Electricians and HVAC technicians often need to enlarge holes in sheet metal enclosures or deburr conduit knockouts on site. The C.K Tools HSS Step Drill Bit T3010 1 makes that job quick and clean, stepping from 6 mm up to 20 mm without changing bits. Its self-centring point starts the cut accurately, while the single-flute design clears chips efficiently in thin materials.

Key specifications

• Type: Step drill bit
• Material: High Speed Steel (HSS)
• Drilling diameter range: 6 – 20 mm
• Number of steps: 9
• Shank type: Cylindrical, 10 mm diameter
• Overall length: 75 mm
• Maximum material thickness: 4 mm (sheet metal)
• Flute design: Single flute
• Point type: Self-centring point
• Surface finish: Bright (uncoated)
• Recommended materials: Sheet metal, non-ferrous metals, plastics
• Applications: Drilling, deburring, reaming
• Packaging quantity: 1 piece

Why choose it

The hardened and ground HSS construction holds a sharp cutting edge through repeated use, and the precision ground cutting edge delivers clean, round holes. The conical geometry lets you drill multiple hole sizes with one bit, reducing the number of tools you carry.

Ideal use cases

• Enlarging existing holes in sheet metal up to 20 mm
• Deburring and chamfering holes in one pass
• Drilling clean holes in plastic enclosures and non-ferrous metals

Good to know

The step drill bit works best in thin materials up to 4 mm thick. Use a drill with variable speed and moderate pressure for optimal results.