ADM D Series Dovetail Ring Set
Includes two 75mm, 90mm, 100mm, 125mm, 150mm or 175mm guidescope/finderscope rings on Dovetail Plate Adapters. Fits 4" Losmandy style dovetail bars. 3/8" aluminum adjusting screws with large 1/4" Delrin Tips. Stainless steel and anodized aluminum throughout for maximum durability.