Customer Reviews for VEVOR Core Drill Bit, 2.5" Wet/Dry Diamond Core Drill Bits for Brick and Block, Concrete Core Drill Bit with Pilot Bit Adapter and Saw Blade, 9.5" Drilling Depth, 5/8"-11 Inner Thread, Laser Welding

We needed to drill a couple of holes through two layers of very old and brittle concrete block wall. It was important that we not 'blow out' the outer wall. Although we drilled a pilot hole to locate the outside hole which had to be slightly lower than the inside to allow for heat pump condensate to drain, and then finish the hole by drilling in from the outside, it proved unnecessary as by carefully slowing the drill as it approached the measured depth to the outside wall, we were able to stop the drill and simply push in the very thin remaining layer leaving a perfect round hole with no damage on the surrounding concrete. We drilled two holes in all and the bit seems untouched. Very good value.

Item came to me exactly as advertised. Works great. Very happy.

Fonctionne parfaitement, j'ai réalisé 3 carottage avec dans une dalle poutrelle hourdis et l'usure est infime

I bought this for a single use, to drill through 10" reinforced concrete. I didn't have access to water so I had to stop periodically to let the bit cool down. It took me about 20 minutes but I got thru the concrete. I'm not sure this would stand up to every day use, but for a couple of times, the price point is spot on.

Worked much better than expected. Definitely worth the money. Received within 3days. Drilled a perfect hole through my brick wall.

Seems quite good quality, did the job no problems. Excellent price for what you get. You can't get one of these for under $100 anywhere else.

Funktioniert gut

Gewohnte Vevor-Qualität und wie immer super Kundenservice sowie sehr schneller Versand. Werde ich für mich zuhause immer wieder kaufen

Bin sehr zufrieden

Super Qualität auf jeden Fall für den Heimwerker und zudem ein super Kundenservice! Sofern ich wieder etwas brauche schaue ich auf jeden Fall erst einmal hier!!!