M102
... the smaller one.

The LK-Instruments M102 is a robust motorized rotation stage designed for either carrying optical elements or being used in custom applications. It can be mounted to the experimental setup in any orientation utilizing standard M6 screws, set screws, posts and post holders.
Features
Hall-sensor controlled automatic zero-positioning
Robust design
Load on motor axis
Specifications
400 full steps per full rotation
1.33 A motor current
-10°C to 50°C temperature range
Applications
Changing optical filters
Neutral density filter positioning