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The Spyderco Perrin PPT Knife is designed by Fred Perin, Philippe Perotti, and Sacha Thiel (that gives it the PPT initials). Built with a cross of both Michael Walkers LinerLock® and Chris Reeves Reeve Integral Lock. It functions as a frame-lock but a black G-10 scale overlaying the lock makes it appear closer to a LinerLock. The black G-10 handle scales are milled with corrugated creases for maximum control and handling. The handle is amazingly comfortable to hold. Its full-flat ground CPM-S30V steel blade is a modified-Wharncliffe profile with a finger choil and spine jimping and a tapered spine-swedge. The flat grind gives it a high quality, very fine edge for excellent cutting. Screw together construction makes cleaning and adjustments simple. Right deep-carry pocket clip and handle lanyard open the door for endless attachment options. SPECIFICATIONS: length overall 7 3/8 in. (187 mm) length closed 4 1/4 in. (108 mm) hole diameter 9/16 in. (14 mm) blade length 3 5/32 in. (80 mm) cutting edge 2 11/16 in. (68 mm) blade thickness 1/8 in. (3 mm) blade steel CPM-S30V weight 5.3 oz. (150 g) handle material G-10