The Warne Vapor Lightweight Scope Level attaches directly onto your scope tube to keep the scope reticle consistently level. Keeping the scope reticle consistently level is critical as target distances increase, Warne's Vapor Lightweight Scope Level allows shooters to easily keep the reticle level without changing their position on the rifle. Easily attaches to your scope tube for right or left-hand configurations. The recommended installation is in front of your turret assembly on the weak-eye side; in this configuration, the bubble seems to float near your reticle when used with both eyes open. FeaturesEasy to installField proven performanceLightweight aluminum