ALPS mouse encoders have 7mm, 9mm and 11mm.
As long as your mouse encoders and the same height encoders use, high precisions, accurate positioning, a sense of scale, feel very comfortable.
Scrolling page often involves jumping up and down, which can be solved by changing the mouse encoders.Specifications:
Height dimension: 7mm 9mm 11mmPackage includes: (Without retail package)
2x ALPS Mouse Encoders