Original ALPS Mouse Encoder Mouse for G403 G603 G703 Roller Wheel
ALPS mouse encoders have 7mm, 9mm and 11mm.
As long as your mouse encoders and the same height encoders use, 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 11mm

Package includes: (Without retail package)
2x ALPS Mouse Encoders