Brous Blades Sinner 4-1/4" closed linerlock knife. 3-1/4" black acid stonewash finish D2 tool steel hollow ground drop point blade with flipper. Features ball-bearing system. Titanium frame with twill weave carbon fiber scales. Checkered titanium back spacer. Black finish titanium pocket clip. Produced in collaboration with Sal Manaro based on his custom folder. Black heavy duty composition storage box with padded inserts and snap closure. Certificate of Authenticity. Limited edition of 500. Serialized.