DTW Diamond Core Holesaws and Diamond Tile drill bits are designed for precision. Ideal for trades such as engineers, electrical, airconditioning and plumbing, the range is one of the largest in the UK. Power through concrete, natural stone, benchtops and tile with minimal effort. If you need assistance or can’t find the size you are after, give us a call, we’re here to serve you. That’s our promise of quality customer service.