Sun Optics 1In. Med. Airgun Ring/9.5Mm-13Mm Adj. Clamp. has been designed to offer you an amazing way to make sure you have a stable surface on which to mount your favorite Rifle Scope to your favorite weapon. Specifications for Sun Optics Variable Air gun Rings 1in.: Manufacturer: Sun Optics Finish: Satin Base/Mount Type: Clamp On Ring Height: Medium Tube Diameter: 1 in Ring Quantity: Pair Fabric/Material: Aircraft Grade Aluminum Weight: 2.9 oz Color: Black Features of Sun-Optics USA 1in Rifle Scope Mounting Variavble Air Sport Rings: Recoil key Fits 9.5mm through 13mm rails Torx 4 screw cap Lightweight aircraft aluminum Satin black finish Package Contents: Sun Optics Variable Air gun Rings 1in. Sun Optics SM5015: 1In. Med. Airgun Ring/9.5Mm-13Mm Adj. Clamp