This Tenebraex objective clear flip cover provides protection to your lens and flips up out of the way when it is time to shoot and includes an adapter ring. Fits the Following ELCAN Scopes: Specter DR 1.5x/6xSpecter DR 1.5x/6x Dark EarthFits the Following Vortex Scopes: Razor HD Gen II 3-18x50Viper PST 2.5-10x44Viper PST 4-16x44Viper PST 4-16x50Viper PST 6-24x50Fits the Following Swarovski Scopes: X5 3.5-18x50 PX5i 3.5-18x50 PZ3 4-12x50Z5 3.5-18x44 PZ6 2.5-15x44 PZ6 2-12x50Z6 3-18x50 PZ6 5-30x50 PZ6i 2.5-15x44 PZ6i 2-12x50Z6i 3-18x50 PZ6i 5-30x50 PZ8i 2-16x50 POther Fits: Leica Magnus 1.5-10x42Nightforce ATACR 4-16x50Steiner T5Xi 3-15x50Tangent Theta 3-15x50US Optics LR-17 Tenebraex Tactical Tough Clear Flip Cap for 50mm Objective Scopes 50MMFC-CCV