Step Drill Bit 6-40.5mm HSS TiN Cone Cutter for Sheet Metal

A step drill bit for cutting a range of hole sizes in sheet metal, thin steel and panel work without swapping between multiple standard bits. Made from HSS with a TiN plated finish, it covers stepped sizes from 6mm up to 40.5mm for common drilling and enlargement jobs.

Used for workshop jobs, garage work, electrical panel fitting, bodywork, fabrication and general DIY repairs where neat holes are needed in thinner materials. Handy when opening out existing holes or working through a range of sizes during maintenance and fitting work, especially on metal panels, enclosures and light sheet sections.

The stepped cone format gives you clearly defined drilling increments, making it easier to work up to the size you need. With sizes marked from 6, 8.5, 10.5, 12.5, 16.5, 20.5, 25.5, 29, 32.5, 36.5 and 40.5mm, it covers a useful spread for regular drilling tasks on thin material. The HSS construction suits repeated use, while the TiN plated finish adds a practical wearing surface for workshop and site box use. Having multiple sizes on one bit also helps avoid constant bit changes when jobs vary.

Step drill bit specifications

• Size range: Steps from 6mm up to 40.5mm.
• Covers: 6, 8.5, 10.5, 12.5, 16.5, 20.5, 25.5, 29, 32.5, 36.5 and 40.5mm holes.
• Material: HSS construction for drilling sheet metal and thin steel.
• Finish: TiN plated surface.
• Application: Useful for sheet metal, panels and thin steel drilling and hole enlargement.

A practical sheet metal drill bit for regular metalworking, fitting and repair jobs.