5" Aggressive Wet Core Diamond Drill Bits for Concrete and Other Masonry 1-1/4"-7 Threaded Arbor

Value

Drilled 3-1/2 hole 7-1/2 through 3500 psi concrete in 19 min with one rebar.

Made an existing hole through 8” poured concrete larger

Hole saw is great for its price. I made 3 holes mounted on my Milwaukee rig and there is plenty of teeth for more. It should be used wet only with a good water system, otherwise it will not last a bit.

I thought this was a cheap price compared to the high end black bit but it turned out to last just as long. It might be slightly slower in very hard stone and old concrete. But it does last. For 1/3 the price. Nice.

If you don't have a water rig, drill a small hole in the concrete, then back feed water into the hole as you drill, it will work the same as a water feed core rig. I drilled multiple cores out of a 8" poured concrete basement wall easily.

I used this drill bit to core out a boulder to make a bubbling fountain for a flower bed. The bit worked great - I bought three more.

Did the job