Diamond core drill bit 1 3/8 inch laser-welded granite stone
Laser-welded diamond core drill bit for dry or wet drilling in granite, marble, and hard stone. Provides fast, stable drilling with protective surface brazing. Customer insight notes mixed opinions on quality and value
Highlights
- laser welded diamond core segments
- 5/8-11 thread compatibility
- multi-material application (granite, marble, hard stone)
Pros
- laser-welded technology for durable segments
- dry or wet drilling capability
- protective brazing layer for clean cuts
- fast and smooth drilling
- suitable for granite, marble, and hard stone
Cons
- mixed customer opinions on durability
- some report segments can off with use
- value for money debated
Best For
Features
- Core drill bit size is 1 3/8 inch (35mm) with 10mm diamond height and 100mm total length
- Diamond grit #25/35 with 80mm working length and 5/8-11 thread for granite drilling
- Suitable for dry or wet drilling through granite, marble, hard stone, reinforced concrete, brick, and block
- Laser welded construction with vacuum brazing protection to prevent segment loss and protect the steel core
- Provides fast, smooth drilling with clean cuts and reduced edge breakage; water cooling recommended for thick granite
