Hawke 2-piece 1" Offset High Rings, 1" Dovetail 1-inch extension configuration High rings to accommodate larger objective scopes Double hex screws to hold your scope firmly in place 9-11mm models are fitted with a recoil stop pin Reversible dove tail clamp that fits 9-11mm and 3/8 inch Internal cushion tape prevents marking and damage High-grade aluminum anodized in matte black