Gracefully contoured, precision-machined, premium steel rings mount 1" scopes on airguns or .22 caliber rimfires with grooved receivers. Highly polished, bright Blue finish or Silver Safari satin finish. Fits nominal 3⁄8" dovetail. Graceful style and superior strength. Mfg: Burris Measurements are from the bottom of the scope tube to the bottom of the ring: Med. .400", High .793"