BKL 1-Pc Adjustable Scope Mount, 30mm Rings, 3/8" or 11mm Dovetail, Black 1-pc scope mount 3/8" or 11mm dovetail Low profile 30mm rings Bottom of mount to scope tube: .825" 2 screws per ring cap Adjustable height to accommodate barrel droop 3/8" side rails for mounting other accessories 2.5" of clamping length 4" overall length 120 minutes of angle adjustment (2 degrees of angle) 4.5 oz. 6 base screws* Matte black Includes 3 hex wrenches *One side of the base shows 6 holes, but the other side shows 6 hex screws. The base has 6 screws to tighten it to your gun's scope rail/dovetail.