6 mm D Shaft to 0.5 in. Hex Adapter

Kevin answered very many questions for me in such great detail with specific AndyMark part numbers referenced knobs want to things incredibly helpful it really got me going thank you very much

This would be way more useful if it was about 1.5 inches long and came with a set screw.

Fit is very loose. Very useful part for low speed application. Perhaps a bit overpriced.

These are okay. No way to lock them onto a shaft, set screw, or to lock them to the wheel. They are also shorter than the width of the wheel. Not really what we were looking for, but we made them work.

This adapter fits both the wheel and the motor shaft well. Wish it was longer and had a set screw so that we could actually attach it to the motor shaft.