When you are building/remodeling a bathroom or kitchen like installing shower or install the faucet and handles in bathroom, you will need to drill holes through Porcelain tiles without cracking, so you could use our diamond tip drill bit to make those holes very precise.
Use these unique diamond milling drilling bits to enlarge and reshape previously drill holes in tile and stone.

These diamond bits can also be used to notch edges of tile to accommodate for pipes or wiring.

Save money by expanding the usefulness of the hole saws you already own; no need to buy a hole saw for each new size you come across.