The Leupold 117607 is designed specifically for Leupold scopes manufactured post-2004. What sets these Alumina Flip-Back lens covers apart is their robust neodymium magnets that provide a secure closure. In addition, they offer triple O-ring seals for optimum protection against adverse weather conditions. Made from high-grade 6061-T6 aircraft aluminum, these lens covers promise durability. Thanks to the precision machining, their operation is both quick and effortless. When opened, their low-profile positioning makes these Flip-Back lens covers outshine other products in the field.These lens covers are compatible with 42mm Objective lenses on VX-5HD, VX-6, VX-6HD, and Mark 5HD riflescopes.