Check the listing for details. Reptilia Bubble Level – Offset for AUS Mount – Black (100-268). Color: Black, Condition: New. Listed at 58.46 USD. Reptilia Bubble Level – Offset for AUS MountThe Reptilia Bubble Level for Reptilia AUS Mount is a level Anti-cant device. Designed as part of our AUS Mount System as a way to keep the scope aligned and prevent the rifle from tilting to the side. This level is reversible to be used on the left or right side of the AUS Mount via the 4 mounting locations integrated in the AUS Mount body.Note: The AUS OFFSET bubble level was designed specifically around the Vortex Optics Razor HD Gen III 1-10×24 LVPO. Some larger windage knob optics may occlude the view of the offset.Like all Reptilia products, the Offset bubble level is 100% made in the USA and carries a full lifetime warranty against manufacturer defects.Reptilia Bubble Level FeaturesMachined from billet 7075-T6 aluminumMIL-STD, Type III, hardcoat anodizedMade in USACompatible with the Reptilia AUS mount