The first time I used it with my 8 amp drill the shaft twisted. If you need a working one, look for a Stedea with a 1/2" shank. It's a few dollars more expensive, but it won't fall apart. Once the shaft twists, everything goes out of balance and is utterly useless. Look at the pictures, they should be straight lines. Using it on a smaller drill press will get you nowhere. Use it on a decent power drill, it spins.