This Tenebraex Anti-Reflection Device provides a retro-fittable and field-practical way to hide reflection on optic surfaces with the use of a high-tech honeycomb material. This ARD is not compatible with a flip cover. Fits the Following Kahles Scopes: Helia 5 (1-5x24)K15i 1-5x24K16i 1-6x24Fits the Following Steiner Scopes: M5Xi 1-5x24T5Xi 1-5x24Fits the Following Swarovski Scopes: Z6 1-6x24Z6i 1-6x24Z6i 1-6x24 EEZ8 1-8x24Z8i 1-8x24 Tenebraex Flip Cover Compatible killFlash ARD for 24mm Objective Lens 27MMU0-ARD