Special designed counterweight kit for Z-axis balance.
It fits on following iOptron mounts (has a M8 threaded holes on dovetail saddle):
- CEM40 (version with THICK 6" V/D dual saddle, except CEM40G)
- GEM45 (version with THICK 6" V/D dual saddle, except GEM45G)
It can also be used for other mounts with a M8 threaded hole, on dovetail saddle or counterweight.