Designed with versatility in mind, the 1.375×24 Rugged Universal Mount, or R.U.M., is made from US Grade 5 Titanium. The R.U.M. is compatible with Rugged’s Dual Taper Locking System mounts, fixed mounts, booster assemblies, and 3-lug mounts, as well as industry-standard mounts. At 2.4 ounces, it is one of the lightest universal mounts on the market.