Remove the scope with just a twist of the levers and reinstall it in only seconds with no loss of zero. Double-lever, dual locking cam system withstands the recoil from any rifle cartridge without shooting loose or accidentally unlocking. Mfg: Leupold SPECS: Steel. Polished blue (PB), matte blue (MB) or Silver. 1-piece bases fit right-hand, actions only. 2-piece bases sold per pair to fit RH, and LH actions.