US PRO 7140 4 to 32mm HSS-G+ Spiral Step Drill

The US PRO 7140 4–32mm HSS-G+ Spiral Step Drill is designed for fast, accurate hole enlargement in thin materials where clean results and control are essential. Ideal for fabrication, electrical work, automotive repairs and general workshop use, this step drill allows multiple hole sizes to be achieved with a single tool.

Manufactured from high quality HSS-G+ high speed steel and heat treated for increased hardness, the drill delivers reliable cutting performance and long service life. The spiral step design promotes efficient swarf removal, helping to reduce heat build-up and produce smoother, more consistent holes.

The stepped cutting range covers 4mm through to 32mm, making it well suited to sheet metal, aluminium, non-ferrous metals and PVC. A 10mm 3-flat shank provides a secure grip in the chuck, helping to minimise slippage during use, while the compact overall length keeps the drill stable and easy to control.

Key Features

• Stepped drilling range from 4mm to 32mm

• Spiral step design for smooth cutting and efficient chip removal

• Manufactured from HSS-G+ high speed steel

• Heat treated for increased hardness and durability

• 10mm diameter 3-flat shank for improved chuck grip

• Suitable for non-ferrous metals, sheet metal and PVC

Stepped Sizes

4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm

Specifications

• Shank diameter: 10mm

• Shank style: 3-flat

• Shank length: 22mm

• Overall length: 102mm