Quote Originally Posted by Shooty View Post
https://www.robotshop.com/eu/en/4-st...ore-black.html

Here is where I bought them from. Just get a 3/8 tap and you can screw them on to the drill gearboxes. Be warned though, you need to be careful when tightening them on, and securing them in place with the reverse threaded bolt: too loose and the wheel will come lose and strip, too tight and the wheel will crack.
sorry got you and Michael mixed up (SOMEHOW) but still good to know where you got them from