ZWO AM5 AM3 Counterweight Bar 28mm Adapter

I have several 28mm counterweights for my iOptron mount which have a 28mm hole. The AM5 counterweight bar uses a 20mm hole.

This adapter allows for the use of one counterweight with the lock nut on the weight tightened. It should work just fine with any 28mm counterweight.

I am using either the 5.5lb or the 11lb iOptron weights and they are quite secure when printed with PLA and 100% infill.

Note: Definitely print with 100% infill or the outer shell will be compromised when tightening the lock nut.