Ring for Picatinny rail can be high or low, scope is secured by clamp with one or two bolts. Rings on Weaver-Picatinny rail shall be torqued with Allen key for better scope seating. Rings are made from steel. Hunters prefer steel rings for Weaver-Picatinny rail. Fixation on rail is very reliable; bolt on the ring penetrates in slot and tightened with nut. Retaining plate prevents ring from moving up. Steel rings for Weaver-Picatinny rail will not fail you at the hunting.