These Sako Optilock rings are low 30mm rings made of blued solid steel, precisely machined to ensure perfect mating with the integral receiver tapered scope mount rails and optimal scope alignment. Each set comes packed in pairs with all necessary tools for easy assembly included in the box. Optilock ring mounts are available in two diameters and also offered in stainless steel, providing durable, reliable, and precision-engineered options for securely mounting your optics on a Sako rifle. Sako Optilock Blue 75/85 30mm Low Rings S1701904