Mouse Skates?

[seen]

I have a MX518 mouse and the skates on the bottom are starting to flatten so I figure I need some new ones.

Newegg sells a few both of which according to reviews aren't true skates. Can anyone assist me in finding some mouse skates for my 518 so it will feel smoother on my pad?

Thanks!

[Fuzi0n]

These are awesome if you can find them.

http://www.frozencpu.com/products/3095/pad-99/Hyperglide_Mouse_Skates_MX-1_-_10_Skates_-_Logitech_MX_510_518_500_700_900.html?tl=g39c51s40 6