Leupold 59030 Alumina Scope Cover Matte Black Aluminum 20mm Objective Screw On Mount Flip Open

Designed for Leupold scopes built after 2004 with 20mm objective lenses, except those with 30mm Maintubes which accept the 24mm cover. The Alumina Flip-Back lens covers feature powerful neodymium magnets to hold them securely closed, and triple O-ring seals to provide maximum protection from the elements.