The Benchmade 3300 Infidel Knife OTF Double Action Automatic Satin Plain Edge. The 3300 Infidel OTF automatic makes a fine addition to Benchmade's Black Class line of knives Infidel OTF has a D2 tool steel satin double edged blade. Anodized T6 aluminum handle. And a pocket clip for easy carry. The milled "stepped" handle design assures that this knife will not be slipping out of your hand.