Multi-purpose mount for counter-weight-shaft (Φ20㎜)

ShaftCube is mount something on 20mm diameter counter weight shaft of telescope count.
I made it for myself, to hold mobile batteries as a weight.

Mobile Battery Holder
Finder Dovetail Base
Cheese plate

There is no rule to use. Please make sure that you fix properly and do not hit on tripod etc. as axis rotate.
Two blocks with 1/4UNC D-ring screws in one set.
I sale some on eBay.

Manual (PDF) is here

Available on eBay (Not for Japanese market)