Leupold Mark 4 12-40x60mm Spotting Scope, Tenebraex Tactical Kit, Includes Ocular and Objective Flip Covers and a killFlash® ARD. The official Tenebraex Part number for this product is 60KIT-000001. IMPORTANT NOTE: Please note that Tenebraex orders are built to order, and normally it take 7-10 days to be built in our production department. For shipping estimates please add that time to your estimated shipping time from the factory to your location. Installation NOTE: To install the ocular cover the OEM rear rubber eyecup must be removed before installing the adapter for the flip cover.