Learn more about W.R. Case and Sons W.R. Case Sons U.S. Army Burnt Walnut Bone Folding Knives boast an eye-catching appeal that makes them ideal for your collection as well as compact, lightweight designs that makes them perfect for everyday carry. Mirror-polished Tru-Sharp surgical-steel blades keep their razor-like edge. Available: Sod Buster Jr. Single skinner blade. Blade length: 2.8. OAL: 6.43. Closed length: 3.63. Wt: 2.2 oz. Mini Trapper Dual-blade design. Clip-point blade length: 2.7. Wharncliffe blade length: 2.75. OAL: 6.25. Closed length: 3.5. Wt: 2.7 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Knives.