The Konus special 7218 mounting rings are made from aircraft aluminum in order to be at the same time extremely strong and lightweight, In particular, their design proves to be truly ideal for the very compact riflescopes that are popular in the tactical field, such as our Konuspro-T30 series. They are also especially versatile because they can accommodate both the 30mm and 1" scopes by adding or removing the internal ring they come complete with. The height of the 7218 makes these rings suitable for every riflescopes with objective diameter of 52mm or smaller, while fitting on Weaver and Picatinny rails. ADD OR REMOVE THE INTERNAL RINGS IN ORDER TO SWITCH FROM 1" TO 30MM DIAMETER LOCKING BASE SUITABLE FOR WEAVER AND PICATINNY RAIL REMOVABLE INTERNAL RING - IDEAL FOR VERY COMPACT RIFLESCOPES