6 Inch x 1 1/4 Inch SDS Plus Bushing Tool for Concrete, SDS Max Bushing Bit Square Head, Concrete Roughness Coating Remove Bushing Bit for Rotary Hammer, Stone, Brick Wall (SDS Plus 16 Pins)

The worst enemy of Walnuts. Christmas nut cracking wont be the same when the kids have a 110V rotary hammer with one of these bad-boys on the kitchen counter. Also useful for other random jobs around a construction site.

Did a great job smoothing out rock surfaces!

Works great

It works but not very well. It would work for very minor bushing of concrete but not really if it’s over and 1/8 inch of uneven concrete

It didn’t last hardly at all. The shank broke off after the 4th use. Definitely not worth it. I know it’s cost efficient but if just breaks that easily it’s not worth the hassle

I was using to crush small rocks and it worked wonderful. However, after about 2 hrs use, it broke just below where it fits into the hammer drill.

I bought the square head concrete bit to tear down plaster walls for my renovation project, and on day 3 of use I found the bit broken, and the chipped section stuck in the chuck of my hammer drill. Despite disassembling the drill, I haven't found a way to remove the chip and so now I have a hammer drill shaped paperweight.

Both broke after 5 minutes use