Case 23441 two blade Copperhead with Blue Pearl Kirinite handle (10249 SS) . The Case Factory is releasing the Case XX Copperhead pattern out of the "Vault" for 2021. The Copperhead gets sharp, but never bites! The Copperhead pattern was introduced prior to World War I. It boasts an oversize "snake head" pocket end bolster that covers the blade tangs so they don't snag your pocket. The Copperhead pattern is scheduled to go back in the "Vault" in 2022, so don't wait to snag your favorite version.