Midwest Industries MIQD1SM 1" QD Scope Mount/Ring Combo Black Hardcoat AnodizedMidwest Industries makes taking your scope off your firearm a breeze. This model fits a 1" tube diameter and features a quick detach lever so there is no need to carry multiple tools. It is made of 6061 aluminum to ensure a long life of reliability and dependability. 1. 40" Offset from base to first ring. Places the scope above the top of the rifle allowing for the use of scopes with up to a 56mm objective. Patented QD lever by Elite Defense.