Talley 1in Med Screw Lock Detachable Ring for Kimber 89 DGR. The machined slot design allows for strength precision and repeatability while the 4mm thickness reduces weight. See the included Dye-on sizing chart for proper fit/load for your firearm. Note: The 4mm thickness is the maximum the ring will safely hold but if the shooter drops below the minimum it will be necessary to return the rings to the zero stop (which may have been moved some). Permissible loads will be determined by the particular firearm. Non-removable / Sold As Pair. Specifications for Talley Detachable Ring for Kimber 89 DGR: Manufacturer: Talley Finish: Satin Gun Model: Kimber Model 89 DGR Ring Quantity: Pair Fabric/Material: Chromoly Steel Weight: 4 oz Country of Origin: USA Package Contents: Talley Detachable Ring for Kimber 89 DGR Talley K200004: 1in Med Screw Lock Detachable Ring for Kimber 89 DGR