*1" Rings High profile. *Fits 9.5 mm to 13mm dovetail. *See-thru mount. *Dual-position clamping system. *Threaded vertical recoil stop pin. *4 hex screws/ring for securing scope. *Twice the clamping area of many conventional mounts. *Superior scope retention. The 2 hex screws on the base let you adjust the rings to fit the different width rails found on airguns. The clamp is made to securely fit a range of dovetail widths.