NIGHTFORCE BR BENCHREST 12-42X56 NP2 DD C107 Benchrest - 12-42x56mm - .125 MOA - NP-2DD Objective outer diameter 	69 mm,Eyepiece outer diameter 43 mm Objective lens diameter 56mm, Tube diameter 30 mm/1.18 in Elevation Feature : Capped, Finger Adjustable