Warne scope Mountain tech low rings are precision CNC machined from 7075/T6 aluminum for a high strength & lightweight platform. Mil-spec hard coat anodized finish for abrasion and corrosion resistance. Rings feature stainless steel hardware for "element proof" protection. Mil-spec 65 in/lb., 1/2" tactical nut attachments, for secure clamping to the rail. Mountain tech rings are nato-stanag compatible, and also fit Picatinny & Weaver style mounts. For maximum compatibility with most scope/firearm combinations. Fits 1" tube. Low height, matte rings.