This 4.5 kg (~10 lbs) counterweight can be used for the following iOptron mount
- CEM40/CEM40EC* (early version with 20mm CW shaft)
- iEQ30/iEQ30 Pro
- AZ Mount Pro
- MiniTower Pro
- MiniTower II
* Check your CEM40/CEM40EC mount CW shaft diameter before ordering.
It can be used for other mount with a 20mm diameter counterweight shaft.