I agree with the previous reviews that this product is much too expensive and that the wheels should be packaged seperately. Unfortunately, I was not able to locate a cheaper alternative that did not end up costing me more when I added in the shipping. I guess if you have Amazon Prime (as I do) then this is the best option. Since one wheel fixes up to 50 disks and the cost of replacing those disks would be so much more than the $12.99 this replacement kit costs, I guess the price is worth it.
* Brand: Digital Innovations * Model: 10511 00 * Dimensions: 1.75" h x 6.00" w x 10.00" l, .24 pounds