In 1997, Case introduced an entirely new knife pattern that took the collector world by storm. Designed by Case Legend Tom Hart, the CopperLock® (549) combined elements from classic Case knife patterns (Trapper & Copperhead) to make an entirely new lockback knife. With a fully locking blade, it has the cutting power of a lockback, with the look and feel of a traditional Case pocketknife. Throughout 2007, Case celebrated the 10th Anniversary of the CopperLock. In July of 2008, this pattern will be retired to the Case XX Vault for at least 3 years. Closed these knives measure 4 1/4 inches.