DVR108 Guide Scope Rings.
Works with both Losmandy D Style and V Series Vixen Style plates.
108mm (4.25") I.D. rings with three point adjustment. Adjustment screws made of 7075 aluminum (85% stronger then 6061), with machined 1/4" Delrin tips.
Wt. 29 oz per set, 2 rings per set, dovetail mounted, no tools needed.
I.D. size from 2.96" to 4.32"
Ht. from top of dovetail plate to center of rings: