Tactical rings feature a picatinny mounting platform for adding additional secondary sight to your riflescope, Come in pairs of 2 with 1 picatinny rail top and 1 inch inserts. Available in 3 different heights high, standard and low. Choose from a variety of rings inlcuding weaver style rings, dovetail style rings and ruger style ring. BARSKA scope rings are precision engineered and manufactured using T6 Aluminum and Aluminum alloy for durability and weight savings. Selecting rings with the correct height to use with your scope depends on several factors including barrel taper, action length, ring position on the scope and the outside objective diameter of the scope.