Leupold QRW2 1in Steel Rings - High - Detachable mounts, crafted from durable steel. The updated industrial design gives you more contact with the base for added stability and easier installation. Cross-slot base rings are engineered specifically to match up with cross-slot bases. We recommend you mount these incredibly stable rings on firearms such as tactical shotguns with built-in mounting rails. QRW mounts bring Leupold accuracy to the cross-slot format. They feature steel detachable accuracy mounts that are based on the familiar cross-slot design. Use the QRW mounts to achieve detachable accuracy.