Enabling easier installation and enhanced strength was the goal with the redesign of the Leupold PRW2 34mm Weaver-Style Scope Rings, and these rings now have tops that are easier to install than ever before, thanks to an all-new keeper system. The rings are designed to work with QRW, PRW and cross-slot bases and are machined in the USA. All rings come with a matte-black finish. Mfg: Leupold