- Professional woodworking drill bit.
- HSS material, high hardness, lengthened core.
- Matched use with mortise and tenon machine.
- The square hole punching needs to use electric drill, hammer & other tools.
- for construction, installation, renovation, decoration
- Material: high-speed steel
- Hardness: 56HRC
- Clamping shank diameter: 19mm (Round)
- Drilling core length: 20cm
1 Piece Tenon Hole Drill Bit.