SPUHR makes separate rings for those who prefers them, the main reason would be because they are somewhat lower than the unimounts. The rings are available in one height only - 1" (25,4mm). They have a built-in level, that is somewhat smaller and not as visible as on the unimount. Dual vials allow the rings to be mounted for a left handed shooter. The separate rings do not come with any built in elevation. SPUHRs system for leveling the scope works for separate rings as well and the leveling kit is included with the rings. Mfg: Spuhr