12" lengths of blank Dovetail Scope Base Stock-just the ticket for all those strange and challenging scope mounting jobs your customers just keep bringing in. Simply cut to length, drill and countersink, then refinish exposed ends with our Aluma-Hyde(TM) or Baking Lacquer. Accepts rings that fit a 3/8" nominal dovetail. Mfg: Brownells SPECS: Anodized aluminum. All are 12" long, A 1/2" (.500) wide. Contoured for .840 diameter receiver.