Feature Quick Release Cantilever Riser Mount for Rapid Installation and Removal on Picatinny Rails 56 mm / 2.2 in Saddle Height, Low 1/3 Co-Witness, Uncluttered View Without Obstruction Crafted from 7075-T6 Aluminum Alloy for Exceptional Durability and Lightweight Performance Compatible with T1 Footprint, Suitable for SCRD-74 Red Dot Sights Specification Ring Dia: N/A Saddle Height: 56 mm / 2.2 in Central Height: N/A Mount Length: 68 mm / 2.68 in Material: 7075-T6 Aluminum Alloy Weight: 74 g / 2.61 oz Mount: Picatinny Finish: Black Matte Items in the Package: T10 Hex Key, 4 Pieces of Screws Size Footprint