Sig Sauer's proprietary ALPHA2 Scope Mounts are machined with an exactness that is both strong yet ductile that allows our rings to form around a riflescope, yet will not damage scope under proper installation. The rings are epoxy powder coated to prevent oxidation and resist gun oils, cleaning solutions, and outdoor exposure.Features:Steel Weaver-style clampsCovered by Sig Sauer's Infinite GuaranteeMatte Black or Flat Dark Earth finishHeight (Centerline of optic to top of pic rail) 1.53"