- Professional wood drill bit
- Suitable for construction, installation, renovation, decoration industry, etc.
- Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity.
- It will get double effect by matched use with mortise and tenon machine.
- The square hole punching needs to use electric drill, hammer & other tools.
Hardness: HRC 48~50
Holder diameter: 19mm (circular)
Drilling core length: 200mm
Slotting flute diameter:1/2″(12.7mm)
Total weight: app