All main sizes for extraction and ventilation work
Core drill segments are laser welded so will withstand higher temperatures and last longer
These core bits are designed to cut smooth, round holes through a range of different masonry with out any material breakout
High diamond content in each tip provides and even cut when drilling
Perfect sizes for han basin waste pipes, overflow pipes, shower and bath waste pipes, extraction vents for boilers and dryers
Always use rotary drilling mode when using these cutters
Cores are for dry cutting only

Applications:-
Medium/Hard Brick,Medium/Hard Concrete Blocks
Facing Bricks,Hard & Coarse Sandstone,Soft Slate
Breeze Blocks,Lignacite Blocks