Bestgle 2Pcs 0.3-3.4mm Keyless Mini Drill Chuck Conversion Tool Electric Grinder Adapter Converter, 2.35mm Shank

I read all of the reviews first. I thought that I would take a chance and maybe get lucky. Unfortunately the although the threaded shaft portion spins fairly true, the problem is with the threaded aluminum alloy chuck. There is too much play between the threaded shaft and the threads in the chuck causing a lot of wobble. Even when the shaft is inserted all the way into the threaded chuck the shaft is seated at an angle. The company needs to tap the chuck with more precision and/or use brass instead of aluminum. I am very disappointed. I expected these to be use able!

You could actually see that one chuck was not tapped properly on the shaft and there was visible wobble of the chuck.On the other one it was impossible to chuck a small bit without the bit wobbling.On the positive side Amazon refunded my money and actually paid UPS to ship back this $10 POS. What a waste but nice of them.

I constantly have to fix the mount because it becomes off. It doesn't stay straight and it is hard to work with when trying to drill.

Regardless of drill bit or dremel tool you use, these do not center. one is sort of useable, one is totally worthless. I recommend to spend the money for a better quality.

Do not buy these cheap pieces of junk. The were not machined you be balanced, so any drilling you try to do wobbles horribly. One of them was so bad that my Dremel bent the attachment shaft.

They were a gift and were never opened by me. They looked to be quality chucks.

Works well. For the money it is a good buy.

This product had a huge wobble on small drills. Quality is poor but to be honest what can you expect for $9.00