Cougar HD Premium 3-1/2 Inch Dry Diamond Core Drill Bit Go-To Choice With 5/8-11 Threaded Arbor Turbo Laser-Welded Segments For Cured Concrete With Rebar Brick Block Masonry And Stone Dry Or Wet Use

Designed for heavy-duty drilling in concrete, brick, block, masonry and stone, this premium core bit handles dry and wet operation, making it a go-to choice for construction, remodeling, and maintenance work.

✅ 3.5 in outside diameter (drills 3.5 in holes)
✅ 5/8-11 threaded arbor
✅ 9 in barrel length
✅ Dry or wet use with most core drilling machines and adapters
✅ Turbo laser-welded notched segments for fast, straight holes
✅ Lifetime warranty against warping, cracking, and material defects

💡 What is a dry diamond core drill bit used for in concrete drilling? This handy tool is designed for drilling precise holes in hard materials.
- Drills cured concrete, brick, block, masonry and stone
- Suitable for dry or wet operation with compatible drills
- Features turbo laser-welded segments for quick, straight holes