Wonderful item for hunting.Features:Easy to install.Comes with screws for installation.Measures 5.5 inches long.13 rail slots for flexible eye relief adjustments and all scope applications.Fits for 20mm rail.Specifications:Material: Zinc alloyLength: 14 * 2.1cm / 5.5 * 0.8inWeight: 45g / 1.6ozPackage List:1 * Scope Mount4 * Screws1 * Wrench