3kg Baader stainless steel counterweight to suit shafts with a 30mm diameter, such as the 10 Micron GM1000 HPS, or the Avalon Linear.
This is the same counterweight as seen
here.
I bought this expecting to need it to reach balance with my gear on a new mount, but it turns out I don't need it at all.
I paid ~ $125 plus shipping for this and I'll accept reasonable offers considering this is brand new.
