Features & Benefits
- Extends existing holes safely and uniformly from 35-70 mm in diameter.
- Includes three guide rails for various hole sizes and compatible hole saws.
- Features a threaded plastic cylinder for easy installation into existing holes.
- Comes with a steel socket and three steel drilling sockets for precise alignment.
- Perfect for professional use, especially in ceiling work and lighting installations.
- Enhances drilling efficiency while ensuring centered alignment.