Review on Schioppa R210 Black Thermoplastic Wheel (Diameter) by Peter Sullivan

I bought some inexpensive magnetic brushes to pick up hundreds of little metal balls that are leaking out of my ankle weights. It's https://www.amazon.com/gp/product/B000COYMDK They had 3 inch wheels which meant they were too far off the ground to reliably pick up all the balls. The funny thing was that these four wheels came in a HUGE box - see the first picture. I'm guessing what they had in stock. These wheels fit well although they are slightly narrower. Now sweepers collect almost 100% of the balls.