Talley 1 in Screw Lock Detachable Ring High Color Case Hardened Color Case. The ring clamp and sling swivel are made from steel that has been heat treated. The rings clamp to the Rifle Scope for a secure "snap" and are easy to install and remove with a simple forward sling adjustment. The forward sling position provides co-witness with most Rifle Scopes on the market. The Screw-Lock detachable feature allows for quick removal of the Rifle Scope without having to unmount the Zero/Aiming System. Co-Witness tolerance of the machined steel rings is better than the closest competitor. Machined from chromoly steel with an electroless nickel finish. These rings provide a strong long-lasting alternative to many of the cast and forged steel Rings on the market today. Specifications for Talley 1 in Screw Lock Detachable Ring High Color Case Hardened: Manufacturer: Talley Finish: Matte Ring Height: 0.5 in Tube Diameter: 1 in Ring Quantity: Pair Fabric/Material: Chromoly Steel Weight: 4 oz Country of Origin: USA Package Contents: Talley 1 in Screw Lock Detachable Ring High Color Case Hardened Talley CCH200005: 1 in Screw Lock Detachable Ring High Color Case Hardened Color Case