Diablo Rebar Demon SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit for Concrete and Reinforced Materials - 3/4" Diameter, 10" Length, 8" Working Length - DMAPL4250

I love this bit and use it for work. I install vehicle equipment and this allows me to anchor in tighter spaces vs the SDS max and hammer drill.

Plugged this into my impact drill and turned it on. This bit cut through the rebar and 6 inches of concrete like it was running in butter. Drilled 16 holes within 30 minutes....perfectly!

I have drilled 16 holes with the bit so far with no signs of wear.

The cutting edges were not sharp in any way. Worse, the bit would not do any cutting whatsoever on rebar it hit in two of the twelve holes and one that had a stone in the slab I was drilling to install a car lift. 3/4" bit. Luckily I have a proper sharpening grinding wheel for carbide and that made a little improvement in the concrete cutting, but for the rebar I had to go back to a standard old metal drilling bit which clawed right through. Got the job done but not nearly as good as expected from the manufacturer's claims.

I used this bit in a Milwaukee Rotary Hammer to install guy wire anchors in huge limestone rocks... better, faster, easier than I ever imagined.

It won't go through rebar, I used a powerful hammer drill and as soon as I hit the rebar, that was it, won't go drill anymore, great for concrete though.

It does go through rebar without damage to the bit if you hit one. The drill bit is tough enough not to sustain damage, but it would be simpler to move the hole if you can. But if you cannot and it is safe to drill through the rebar, it will just take time to get it done. The bit does great just drilling through cement.

Bought this specifically to drill holes for new car lift anchors. I had rebar in in concrete 12x12 grid pattern so was not sure if I was going to hit anything. Using a harbor freight rotary hammer, the bit blasted through the concrete with ease. If I hit any rebar, I could not tell, but good to have just in case.