Losmandy ring set used previously on the DM8 plate
Consists of
2 x Losmandy rings and losmandy dovetail plate clamps (think they are the DVR108 as they measure approx 110mm diameter)
1 x Losmandy DVA dovetail plate adapter and smaller ring (65mm diameter approx)
These are designed to fit together to fit a guide scope on a dovetail bar (as per my DM8 listing).
These were good to fit an Orion ST80 (which it was originally used for) with extension tube on the end for a guide camera.