Makita’s 3-1/8" x 24" SDS-MAX Tunnel Bit is designed to drill larger holes in masonry for piping, ventilation, and electrical installations. This bit is ideal for drilling holes in concrete, block, and brick where the depth of the hole exceeds the depth of a standard core bit. The B-66313 features a solid tungsten carbide head, a carbide-tipped centering point for more accurate drilling, and a solid one piece system that transfers power directly to the end of the bit. A two flute design provides faster clearance of debris.
Prop 65
- per 2000 Consent Judgement
Features
- DESIGN - Two flute design for faster clearance of debris
- Larger diameters than standard carbide bits which allow smaller hammers to drill larger holes
- 24" overall length; 18" usable length
- APPLICATIONS - For making through-holes in masonry for piping, ventilation and electrical installations
- PERFORMANCE - Solid one piece system transfers power directly to the end of the bit
- Ideal for drilling large holes in masonry where the depth of the hole exceeds the depth of a standard core bit
- For use in rotary hammers that accept SDS-MAX bits
- Solid tungsten carbide head
- For use in concrete, block and brick
- PRODUCTIVITY - Carbide-tipped centering point helps reduce bit walking for more accurate drilling
- Asymmetrical tungsten carbide teeth for faster drilling and longer life
- Carbide-tipped centering point helps reduce bit walking for more accurate drilling
- Solid one piece system transfers power directly to the end of the bit
- For making through-holes in masonry for piping, ventilation and electrical installations
- INCLUDES - 3-1/8" x 24" SDS-MAX Tunnel Bit
- Two flute design for faster clearance of debris