I bought this as an 'upgrade' for my little Black & Decker drill I had for about 5 years and which I gave to my mother in law. This Juemel had some accessories and a 2 speed derailleur which my B&D was missing so I decided to buy that instead of the B&D which is very similar to this one. What mistake! Yesterday when used with a spoked wheel in a medium light application the chuck stopped spinning. At first I thought it was just a screw, but no. After that he worked here and there, but after 10 minutes he was completely dead. The motor turns but the cartridge does not. And the turnbuckle isn't loose or anything, so there must be some gear in there that's broken. I've owned this drill for a total of about 4 months and have hardly used it. I had an old Black & Decker that was probably 5 years old and I put it through terrible abuse it was never designed for and it's still surviving this piece of junk. Guess what brand I'll buy next.