Step Drill Bit 4-42mm HSS Steel Cone Cutter

A step drill bit for drilling multiple hole sizes from 4mm to 42mm using one cone-shaped cutter. Made from HSS steel, it is a practical option for sheet metal work, panel drilling and general repair jobs where a range of hole sizes may be needed.

Used for garage work, workshop jobs and DIY repairs, this type of cone hole cutter is handy when opening out holes in thin metal, body panels and similar materials. It suits buyers doing vehicle maintenance, electrical fitting, fabrication or general home maintenance where different diameters are needed without swapping between several separate drill bits.

The stepped design gives clearly defined drilling sizes, helping with controlled enlargement as you work up through the range. Covering 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 and 42mm, it is useful for common panel and metalworking tasks where space in the tool box matters and quick access to multiple sizes is helpful. The HSS steel construction is suited to repeated use for regular workshop or maintenance work. For anyone carrying out fitting or repair jobs, the broad size spread helps keep the right cutting option close to hand.

Step drill bit specifications

• Size range: Covers drilling sizes from 4mm up to 42mm.
• Covers: 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 and 42mm steps.
• Material: Made from HSS steel for metal drilling and general workshop use.
• Number of steps: 14 stepped sizes on one bit.
• Application: Useful for cutting holes in sheet metal, panels and other materials.

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