These precision machined, low-profile rings are manufactured by the same factory that makes Vepr rifles. They were designed for Molot mounts and can be installed on any Picatinny rail. These are excellent quality and are machined, filed and finished in pairs so each set of two rings are a perfect match. Made of high grade siluminium to last a lifetime. Ring height is 25 mm. These rings are ideal to mount PU scopes on Picatinny rail. Additional inserts to use with 1" tube scopes give you extra flexibility.