VEVOR Core Drill Bit, 2" / 50.8 mm Diameter 5/8"-11 Threaded, 9.5" / 241.3mm Depth Diamond Dry Coring Bore Tool with a Pilot Bit & 4.5" Blade, Masonry Hole Saw Bits for Hard Concrete Brick and Block

from Steve

Price was great, delivery was fast, great product, thank you very much. Drilled 2 - Two and a half inch holes 13" deep thru poured solid concrete wall. Took about 2 hours. Im very pleased

from Sootheez

Now, this is a Diamond head drill! Awesome!!

from Demon Camber

Took bite out of high strength well that consisted of 5000+ psi concrete, masonry brick and cinderblocks. It wasn't anywhere close to fast but it got the job done well. Water helped speed up the process but it was extremely messy...The free cutting disk works great too.

from Oldtimer

Although I only have an old hammer drill (Hammer off) I drilled it wet. I first hammer-drilled a small hole through the wall and then ran an evaporative cooler water supply line into the inside of the basement. I inserted it inside the small hole and stuffed some foam insulation around it so that...

from stacy

The bit worked great and was a terrific price. It went through brick and concrete block as described, with several breaks to cool off my hand drill that I used for the project. I would definitely recommend this product for its performance and very competitive price. Be sure to wear a good mask to...