The Monstrum Tactical Offset Reversible Scope Ring Set is designed for mounting standard tube style rifle scopes. Rings are 30 mm in diameter to accommodate 30 mm diameter scope tubes. The distinctive offset reversible design allows for added flexibility for scope placement and optimum eye relief. The rings extend forward 1.5 inches from the base and can be mounted in either direction, allowing for a variety of mounting options dependent on your preferred scope placement and your mounting system. The rings mount to any flat top Picatinny rail equipped rifle. High profile in height, it measures 0.8 inches from the base of the mount to the bottom of the rings. Constructed from aerospace aluminum, the rings are both lightweight and durable. Each ring is 2.25 inches in total length and weighs 2.5 ounces in weight.