
The Frost step drill is a high-speed steel (HSS) stepped bit that drills and progressively enlarges holes from 4mm up to 30mm with a single tool.
Use it to bore and step out clean holes across a wide size range in thin metal and sheet without swapping bits.
Frost 4 30mm Hss Step Drill is a high-speed steel drill designed for efficient drilling in various materials including sheet metal, aluminium, plastic, and fibreglass.
The Frost 4 30mm Hss Step Drill is engineered for precision and control, featuring a spiral flute design that reduces vibration during operation. This drill is equipped with fixed drilling steps, allowing for seamless transitions between sizes without the need for pre-drilling. Its three-flat shank is compatible with 3-jaw chucks, ensuring a secure grip. Ideal for use in sheet metal applications, this step drill also deburrs the previously drilled hole with each step, enhancing the overall finish of the workpiece.
| Dimensions (W x H x D) | 150mm x 49mm x 44mm |
| Weight | 0.218kg |
| Material | High Speed Steel |
| Colour | Orange |
| Model Number | 92913 |
| Volume/Size | 0.32L |
The Frost 4 30mm Hss Step Drill is designed for precision drilling in various materials.
4mm to 30mm.
High-speed steel (HSS).


