kwb Step Drill 420mm – Precision Step Drill for Metalworking
The kwb step drill with 420 mm length is a conical drill bit made of HSS steel, specifically designed for metalworking. It allows stepless drilling from 4 to 20 mm diameter without changing tools, saving time and delivering precise results.
Versatile: one drill covers diameters from 4 to 20 mm – ideal for sheets, tubes, and profiles.
HSS steel: high-speed steel ensures clean cuts and long service life.
Cylindrical shank: fits standard drill chucks, easy clamping.
420 mm length: reaches hard-to-access spots on machines or in installations.
24 months manufacturer warranty provides peace of mind for daily use.
What sets the kwb step drill apart
The conical grind of the step drill enables vibration-free drilling without center punching. The precisely ground steps produce burr-free holes that require little finishing. This makes it the preferred tool for series drilling in thin materials.
Ideal for...
This step drill is aimed at metal fabricators, locksmiths, electricians, heating installers, and demanding DIYers who regularly need clean holes in steel sheet, aluminum, copper, or plastic. Also perfect for use in automotive workshops and sanitary installations.
How to use the step drill
Use the drill at low speed (300–500 RPM) with light pressure. Apply cooling (e.g., cutting oil or water) to prevent overheating and extend tool life. Drill in steps: start with the smallest diameter and increase gradually to the desired size – this ensures clean edges and protects the tool.
kwb is a German manufacturer of tool accessories specializing in drills, cutting tools, and screwdriving tools. Their products are known for solid quality and good value for money.
A step drill is a conical drill bit that allows drilling different diameters in metal with a single tool without changing bits. The steps are precisely ground and produce burr-free holes.
The kwb step drill is suitable for metal: steel sheet, aluminum, copper, and brass. It can also be used on plastic, but not on wood or stone.
The drill has a cylindrical shank with 10 mm diameter (standard) and fits common drill chucks up to 13 mm capacity.
Delivery includes the kwb step drill 420mm alone. No case or additional accessories are included.
Use low speed (300–500 RPM) and cooling to prevent overheating. Drill step by step from the smallest to the largest diameter to obtain clean edges and extend tool life.
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