The Case item number 53540 refers specifically to the Case XX Ruger Marlin. This is a Licensed Red Synthetic Sod Buster Jr. pocket knife. This particular iteration is a special collaborative run celebrating the iconic American outdoor and firearm legacy after Sturm, Ruger & Co. acquired Marlin Firearms.Key Specifications & DesignThe Knife Pattern: It uses the traditional Sod Buster Jr. (Pattern 4137) framework. It features a curved, ergonomic handle profile designed for comfort during heavy use.Blade Type: A single, mirror-polished Skinner blade (2.8 inches long) with a nail nick opener.Handle Construction: Built with a durable, smooth Red Synthetic material paired with strong brass pins and liners.Dimensions: It measures 3.63 inches long when closed and weighs approximately 2.2 ounces. This makes it a highly pocketable and compact everyday carry (EDC) choice compared to the standard full-size Sod Buster.Locking Mechanism: This is a non-locking, traditional slipjoint folder featuring a snappy manual pull.