Dry diamond drill bit for tiles, marble and glass – no water needed
4.7 / 5.0 (based on more than 2613 reviews)
Drill clean holes in tiles without cracks, chips, or water mess
This dry-use diamond drill bit lets you drill, grind, and shape porcelain tile, marble, glass, and granite — without soaking your bathroom or shattering an expensive tile on the last hole. The vacuum-brazed diamond grit grabs immediately on contact, and the standard 1/4-inch hex shank fits any drill, impact driver, or rotary tool you already have.
Prevent tiles from cracking on the last hole of the job
You mark four spots for a towel rack. Three holes go fine. The fourth chips at the edge and a hairline crack runs across the surface. Regular masonry bits skate across porcelain glaze. Cheap diamond hole saws need a constant drip of water to prevent overheating — and running a garden hose through a finished bathroom for one bracket is not realistic. This bit grabs the surface as soon as it touches it and stays cool during dry use.
➤ Grabs immediately, no pilot hole needed: Vacuum-brazed diamond grit locks in as soon as the bit touches the glaze. Mark the spot, pull the trigger, drill — no slipping, no spiderweb cracks, no taping off the area beforehand.
➤ Works dry, no water tray needed: The exposed grit tip sheds heat through the open surface, so you can drill a wall or shower bracket without plastic sheeting or a cooling water hose.
➤ Fits any drill you already have: The standard 1/4-inch hex shank loads into cordless drills, impact drivers, and rotary tools just like a screwdriver bit. No SDS adapter, no chuck key, no special collet needed.
Made for hex-shank drills, not industrial wet drilling rigs
Most diamond core bits are designed for drill rigs that flood the cutting area with water. This bit uses vacuum-brazed grit — diamond particles fused to the steel tip at high temperature so they stand proud of the surface and stay sharp much longer than the electroplated bits in cheap hole saw sets. The exposed grit cuts faster, clears debris through its open structure, and stays cool enough for dry use in normal jobs.
The 1/4-inch hex shank clicks into the same chuck or quick-change holder used for screwdriver bits. Drill a hole, switch to a Phillips bit, tighten the screw, and switch back — no loosening halfway through drilling, no special adapter, no extra tools needed.
Why DIYers skip the wet-saw setup
