T-2 Delrin Tuning Rings – Set of 15: 5 different strengths
(0.6/0.8/1.0/1.2/1.4mm) with three rings per strength.
Optimum distance matching between camera and Off Axis Guider when
both are screwed. Optimal adjustment of the position of
Clamping screws by placing the adjustment rings underneath. by a single one
Ring between T2 connections to prevent twisting the threads
wolf down. T2 threads that are too long can be shortened with the adjustment rings
will.