From Marcrist
The DCU750 is a fast cutting, outstanding value for money dry diamond core drill bit. It is suitable for general purpose, building materials, masonry, cast concrete, unreinforced concrete, concrete, beton 008, class A engineering bricks, block pavers, blockwork, sandwich materials, screed, concrete roof tiles, class B engineering bricks, facing bricks, lignacite blocks, dry wall, plasterboard and dust free Key Features Self-centring rooftop segment for ease of use Exceptional long life for lowest costs per hole drilled Up to 5 times faster than Chinese cores Developed and made in Britain for hard British materials More than 300,000 times tried and tested In daily use by Europe's leading companies