Concrete & Masonry Professional Drill Bit Set (5PCS) for Glass/Brick/Plastic/Cement/Wood/Tile/Etc, Industrial Strength Carbide Drill Bit Tip, 1/4"-1/2" by TITGGI

Works great. Cuts through engineered sill stone like butter. The smallest bit was a little bigger than I needed for my plastic anchors so I had to grind down the flares on the sides of the bit tip a little to make the holes in the stone a little smaller and the metal on the tip was super-hard. Comparable to bits costing 3/4x as much.

Excellent addition to any tool box, makes drilling thru tile and brick easier. Sturdy and good assortment of sizes.

They Are nice but some of them broke quickly that’s why I took one star away however the ones that work are some of my favorite drill bits that I’ve had. They rip right through any thing that I’ve put them against even when the ones that broke it wasn’t the material I drilled through as I used another bit in the box and it ripped through with no problem I honestly believe any bit is subject to breaking at any moment depending upon circumstance’s.

I bought these for my boyfriend who is a carpenter. He was trying to find a good set of bits for a good price. These fit the description.

Works great!After boring the first hole use water to cool down the drill bit and will last longer.

Hasta ahora muy útiles y de excelente presentación. vamos a mirar en trabajo pesado como es su comportamiento.

I'd avoid these if I were to purchase them again! weak tips that broke on the first hole and had to bore the rest of my holes to size I mean what's the point! Hahha

These Masonary drills work OK however, the plastic case they come in is almost impossible to open, so I had to crack the case to get out the drills. I tried everything before I did this I must’ve missed something on how to open the case.