The Monstrum Tactical Scope Ring Set is designed for mounting standard 1 inch diameter tube rifle scopes. The rings mount to any flat top Picatinny or Weaver rail equipped rifle. The rings come in Low, Medium, and High profile sizes. The low profile rings measure 0.185 inches from the base of the mount to the bottom of the rings. The medium profile rings measure 0.395 inches from the base of the mount to the bottom of the rings. And the high profile rings measure 0.7 inches from the base of the mount to the bottom of the rings. Constructed from aerospace aluminum, the rings are both lightweight and durable. All Monstrum Tactical mounts come with a lifetime guarantee.