Applegate-Fairbairn Combat Folder - Double Edge 420HC Bead Blasted, Combination Blade. The Gerber Applegate Fairbairn series knives are recognized worldwide for their superior strength in the tactical folding knives class. This Gerber Applegate-Fairbairn Combat Folder has a double beveled, partially serrated Bead Blasted Stainless Steel blade. The blade can be securely locked with a Roto-Lock locking system, and the handle is made of brown glass reinforced nylon. Blackened pocket clip for easy carry.