Comments

• im a stone setter i use diamond hole saws (drill bits) for plumbing features etc i have a 2 1/2 inch a 2" and a 7/8 which are the standard plumbing diameters used...these three bits cost 500.00 combined they cut true accurate and fast

  in How do you drill into a rock face? Comment by toby-walsh_60b4b9865910c May 2021