The utg 30mm/2pcs hi pro le grade picatinny qd rings: 22mm wide is a 4-screw high profile "tiger" ring.Precision machined from aircraft grade aluminum alloy with anodized black matte finish.User friendly ergonomic quick detach/lock lever fully adjustable to fit any picatinny rail.High quality synthetic protective tape applied on rings internal surface, tight tolerance control and repeatable locking for re-zero performance.Type: Ring SetTube Diameter: 30mmHeight: HighFinish: Matte AnodizedStyle: Weaver and PicatinnyMaterial: AluminumOne Or Two Piece: PairMount Type: Picatinny/Weaver