55mm Huge Trackball Replacement for Kensington Wired SlimBlade Trackball Mouse/Kensington Expert Wireless Trackball Mouse (K72359WW) /K64325 /k72327 (Black)

Perfect fit for the Kensington K64325. Looks good. I bought the red version.

I ordered the "black" one (looks just like the picture except not the size of a baseball!), it fits the Slimblade perfectly. The ball does have a slightly more slippery feel to the touch, but in use it is a very subtle difference versus the original. Definitely a great deal if your original ball gets damaged and you need a replacement, but if you're looking for some kind of upgrade or enhancement this isn't going to do anything for you, imo.

This thing rolls SMOOTH.

Item: LZYDD 55mm Huge Trackball Replacement for Kensington Wired SlimBlade Trackball Mouse/Kensington Expert Mouse.Pro: The only 55mm replacement trackball I could find for my Kensington Expert Mouse mdl k64325.Con: slightly too big resulting in noticeably slower movement. Electrostatically picks up dust.Yes, the ball is very smooth but that does not help.

I didn't think I needed this. I bought is as a backup ball for my Kensington Slimblade ball in case it got damaged, but when I tried it I was blown away. It's way more slippery, which means the mouse curser moves much faster. It's almost like the ball is floating. It's also way more precise for micro-movements. This is a must buy if you are unhappy with the somewhat jerky default trackball. Just buy it.