I am new to Battle Bots and I am helping my grandson, so I ordered these wheels since everyone seems to use them. They are very nice but require some thought about how to use them. I have a metal shop so I machined a 1 3/16" bushing with a 1/4" key way and used my 1/4" metal keyway broach to easily broach a keyway into the wheel. The drive bushings are threaded for the drill motors I am going to use and the rears are just simple live axles with free spinning wheels.

We have been using Colson wheels on our FIRST robots for six years now. They are extremely long wearing, have excellent traction even after extended wear. We usually cut a diamond tread pattern for extra traction. We run live axles machining a knurled plug which is bored and broached for our desired drive axles and then press fit into the stock opening.