dophee Tactical 25.4mm 1" Ring Extended One Piece 11mm Dovetail Rail Mount for Hunting Full alloy metal, military style Non-reflective black matt, low weight and high strength. Quick release nut allows instant attach & detach action. Overall Length: 100mm (3.94"). Ring Width: 17.5mm (0.69"). Inner Ring Diameter: 25.4mm (1"). Height: 53mm (2.09"). Rail Width: 11mm (0.43"). Rail Length: 62mm (2.44"). The Distance between the Rings: 39mm (1.54"). Note: NO Retail Box. Packed Safely in Bubble Bag.