West Lake Precision Scope Leveling Kit, Includes 30mm Smooth Alloy Scope Bubble Level Indicator (Anti-Cant) & 1" Ring Reducer Lightweight Aluminium West Lake Tactical’s rugged precision scope level kit made from aircraft grade aluminum and steel alloy. Our precision scope level kit contains one scope bubble level indicator, one 1 inch ring reducer and one Allen wretch. West Lake Tactical’s precision scope level kit is intended to attach directly to your scope tube without having to remove it. Our scope bubble level indicator aids in correction of cant errors, giving you a dead on true vertical hold. West Lake Tactical's Scope Leveler is compatible with any scopes with 30mm or 1" tube diameter. Specification Color: Matte BlackDimensions: 6 cm x 5 cm x 1.5 cmInner Diameter: 30mm; 1 inch with ring reducerWeight : 1.5 ozLevel Material : Aluminum and Steel AlloyReducer Material: PolymerItems IncludedOne Alloy Bubble Level One 30mm to 1" reducer One Allen key Compact & light weight Precisionly machined with high grade Aluminum and Steel Alloy with performance and durability in mind Easy Installation Conveniently fits any scope tubes with 30mm or 1 inch diameter (ring adapter is included) Enhances Accuracy Smooth aerodynamic design that flows with your scope Providing dead on true vertical hold, ideal for precision shooting, competition, and hunting Easy Installation Level Your Rifle Scope 30mm to 1" Adapter