لقمة ثقب ماسية Drill Hog لقطع الرخام والجرانيت والزجاج

Bought these to drill a few holes in a glass block wall and they went through with just water for cooling. The 3/8" shank fit my regular drill, no wobble at all. Five sizes in the kit means I didn't have to buy extra bits for the smaller holes.

Cut through 3/8" marble tile like it was drywall — just kept a trickle of water on it and the diamond tips never dulled. The 1-3/8" size was perfect for my faucet holes, and the 3/8" shank fit my corded drill without any wobble. Five sizes in one kit for this price is a steal.

Bought these to cut a few holes in my granite countertop for a soap dispenser and they chewed right through it with a little water sprayed on. The diamond coating still looks sharp after four holes, way better than the cheap set I melted through last year.