Wheels for racking

Bracket to add wheels to the standard cheap metal racking. I bought the wheels and the racking, this print is just to fit one to the other. The wheels screw into the print. The whole thing then slips on the corners like the feet they come with, depth is up to the first clip/rung and it seems stable under load and moving around. The compression fit also kept it on a loose rail as i swung it about. I printed with PLA, will have to see how it lasts in the cold/heat but seems sturdy. I built the extra rack I had as two half height mobile tables. Obviously, I would be really careful about putting these on a full height rack and putting the heavy stuff on the bottom would be really important. So use with caution and don't be daft but hopefully they'll be of some use to someone else so sharing :)