FEVERWORK 70x20x10mm Grinding Wheel Adapter Set Changed Electric Drill Into Grinding Machine - Green

Surprisingly hard to find a wheel in this size. I used it in a normal drill to enlarge a 4" cored hole in standard red brick work for a dryer vent. The hole was a fraction too small. Worn out after this one job, but it did it.

Not as good as expected

Great size fitted my electric drill exactly

Stone does not seem to be that affective on heavy surfaces

To soft

Nice solid bolt to hold the pieces together, a spanner needed to clamp the assembly (everybody has spanners) but the silver shaft that fits into the drill chuck has to be fitted into the main black shaft that hold the grinding wheel. It needs a small Allen key to loosen the retaining screws, then tighten them to hold the silver shaft in inside the black shaft, or the assembly won't spin with the drill chuck. They supplied a right-angle tool that looks like an Allen key, but it's not a hex, just a round piece of metal bent to 90 degrees. If I hadn't had a very small Allen key of the right size, by pure coincidence, I'd have been stuck. Otherwise, no problem. Maybe they usually supply the right key, and mine was just a dud. If the supplier reads this, check your stock, my friend.

Easy to use , only problem I had was no nut was in the packaging, I had to buy one

Excellent value for money, but I found the grinding wheel a little soft, for what I needed