BKL Single 1" Double Strap Offset Ring, 3/8" or 11mm Dovetail, 1" Long, Medium, Black BKL 1" Single Double Strap offset ring Fits 3/8" or 11mm dovetail Medium profile 1" clamp length 1" combined ring length 1.25" offset 2.25" overall length 0.774" from bottom of mount to bottom of scope tube 2 hex screws secure the base 4 hex screws on the triple-strap ring caps Black 2.70 oz. Includes 1 (one) ring and a hex wrench