Leupold Mark 4 Medium 30mm Scope Rings, Matte Finish CNC machined steel Medium height, 0.84" (21.3mm) Mil-Std 1913 Picatinny rail compatible Designed to fit riflescopes with a 30mm main tube Torx head screws resist stripping and driver slippage. Department - unisex-adult. Included Components - rifle-scopes. Material - other. Sport Type - Hunting.