- Super-strength steel
- Cutter portion coated with orange or black P.T.F.E.
- HW head with precision balanced centre point
- 2 HW precision ground cutting edges (Z2)
- 2 negatively ground spurs (V2)
- Parallel shank with driving flat and length adjusting screw.
Ideal for hinges. Used on boring machines equipped with adaptors or chucks. For drilling accurate and clean-cut blind holes in solid wood, wood composites, plastic and laminated materials.