This Tenebraex clear ocular 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 Hawke Scopes: Vantage 3-12x50Vantage 3-9x50Vantage 4-12x50Vantage 4-16x50Fits the Following IOR Scopes: 9-36x56Crusader 5.8-40x56Lutaz 3-25x50Patriot 9-36x56RECON 4-28x50Terminator 12-52x56Fits the Following Leupold Scopes: Mark 4 ER/T 4.5-14x50Mark 4 ER/T 6.5-20x50Mark 4 ER/T 8.5-25x50Mark 4 LR/T 3.5-10x40Mark 4 LR/T 4.5-14x40Mark 4 LR/T 4.5-14x50Mark 4 LR/T 6.5-20x50 (30mm) M1Mark 4 LR/T 8.5-25x50VX-R 1.25-4X20VX-R 2-7X33Fits the Following Nightforce Scopes: NX8 1-8x24/li>NXS 1-4x24 COMPACTNXS 2.5-10x32 COMPACTNXS 2.5-10x42 COMPACT (Objective)SHV 3-10x42Fits the Following Swarovski Scopes: Z3 3-10x42Z3 3-9x36Z3 4-12x50Fits the Following Vortex Scopes: Diamondback Tactical 3-9x40Diamondback Tactical 4-12x40Viper 3.5-10x50Viper 4-12x40Other Fits: Bushnell Elite Tactical 3-12x44mm, LRHS 4.5-18x44mmSightron SII (TS) 36x42Trijicon MRO (Objective) Tenebraex Clear Flip Cover w/ Adapter Ring UA004-CCR