Brous Blades Caliber Acid Stonewash - 4-1/4" closed linerlock knife. 3" acid stonewash finish D2 carbon steel spear blade with flipper for easy opening. 3D machined carbon fiber handles with titanium liners. Lanyard slot. Reversible stainless pocket clip. Comes in hard shell storage case. Certificate of Authenticity. Serialized. Limited edition of 500 produced.