The new Halo-X is a game changer. Originally designed for Leupold's Mark 5HD (U.S. Army PSR, M110 and MK22) military optic programs, this unique and precision engineered level is now available for civilian use. Machined from ultra-strong 7075-T6 aircraft aluminum, this is our lightest and strongest level. Weighing less than half an ounce, and only .3125" wide, it's our most minimal level for crowded scope tubes with extensive vegetation. Product Features: Vial-Bridge(TM) dual connection points and suspended bubble level with reflective platform, allows maximum light refraction for enhanced fluid illumination and sight acquisition in all outdoor and harsh Mfg: Flatline Ops