Step Drill Bit 6-30mm HSS Hole Cutter for Metal Plastic Wood

A 6-30mm step drill bit, used for drilling or opening out different hole sizes with one tool. Made from HSS, it is a practical choice when working on metal, plastic and wood and you want a cleaner, more controlled way to increase hole diameter.

Used across garage work, workshop jobs and DIY repairs, this type of hole cutter is handy when hole sizes vary and stopping to swap drill bits slows the job down. It suits fitting cable entries, enlarging existing holes, and working on sheet material where several diameters may be needed in the same task. For vehicle maintenance, home maintenance or general trade use, it helps keep drilling work straightforward when you need to move through sizes quickly.

The stepped design covers a range of common sizes from 6mm up to 30mm, so one bit can deal with multiple drilling tasks without reaching for separate cutters. High-speed steel construction gives it the durability and heat resistance needed for regular use, especially when working through metal or repeated jobs in the workshop. The stepped layout also helps with gradual hole enlargement, which can make sizing easier to control on thinner materials. Keeping several sizes on one bit is useful for regular maintenance and helps avoid switching between tools when the job changes as you work.

Step drill bit specifications

• Size range: Covers hole sizes from 6mm to 30mm.
• Covers: Step sizes include 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 and 30mm.
• Material: Made from high-speed steel for durability and heat resistance.
• Application: Suitable for use on metal, plastic and wood.
• Function: Single stepped bit allows multiple hole diameters from one cutter.
• Design: The step bit produces multiple hole diameters from one cutter.

A practical choice for regular drilling, fitting and repair work.