High-Speed Steel Step Drill Bit Set
This high-speed steel step drill bit set is designed for drilling holes in various materials. Each bit features multiple steps, allowing for drilling holes of different sizes with a single bit.




Technical Specifications
Overview
Professional High-Speed Steel Step Drill Set
This high-speed steel step drill bit set is engineered for precision drilling across various materials, making it an essential tool for electrical, plumbing, and automotive professionals. The bits feature a titanium coating for enhanced durability and extended service life while ensuring clean, accurate cuts. With multiple steps per bit, this set allows for drilling a wide range of hole sizes without the need for frequent tool changes.
Technical Specifications
Material
- Shank Type
- Hex Shank
Set Composition
Key Performance Metrics
Drill Bit Size Ranges
| Drill Bit | Size Range | Steps (mm) |
|---|---|---|
| Small Bit | 4-12 mm | 4, 6, 8, 10, 12 |
| Medium Bit | 3-12 mm | 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 |
| Large Bit | 4-20 mm | 4, 6, 8, 10, 12, 14, 16, 18, 20 |
Applications
Key Features
- Multi-step design for versatile hole sizing
- Titanium coating reduces friction and heat
- High-speed steel construction for long life
- Hex shank for secure grip in drill chucks
- Recommended Applications
- ElectricalPlumbingAutomotiveMetalworking



