The Zero Tolerance 0456 Flipper Knife Titanium Stonewash Satin Plain Edge. Dmitry Sinkevich teamed up again with Zero Tolerance to produce this stunning 0456 Titanium Flipper knife. This knife features 3-D rayed handle contours and a custom blade shape that makes it a standout in any collection. The high quality blade is made from CTS-204P steel and comes in a sheepsfoot style with a two-tone finish. ZT's KVT Ball Bearing system provide smooth opening and a titanium frame lock firmly secures the blade in the open position. Custom touches include a blue anodized pivot, backspacer and reversible pocket clip.