The differnences between an big air ball tower ball and an motorized madness balmachine ball?
I'm thinking of buying more knex balls at knexusergroup. The only balls I have right now are 8 motorized madness ballmachine/ loopin lizard balls. The one's at knexusergroup are the one's from the big air ball tower. So my question is: Are they the same and if not what are the differences?
Thanks for reading this.