Case Fire Engraved Trapper Knife. This Knife Features: 4-1/8" closed, stainless steel blades, clip and spey blades, corelon handles. Case Corelon Knives: Case knives have always been known for unique characteristics. The hand crafted nature of the product means no two knives are exactly the same. Never has this been more evident than in the Case Corelon handle knives. This man made material is reminiscent of some of the early celluloid handles; the unique color combinations and durability of this product first made this material popular as bowling ball material, and has quickly become a main stay for Case consumers and the Case License Products program. Available in several patterns and colors, the Case Corelon knives will certainly enhance any collection.