Particle. Separation. Device. Break it down to brass tacks: the P.S.D. is made to slice. This everyday carry folding knife's blade is designed with a full recurve and a highly efficient double grind. And, with Assisted Opening, it shows up to work in the blink of an eye. Assisted Opening: Flipper deploys the blade fast Smooth Opening: IKBS ball bearing pivot deploys the blade smooth Easy To Sharpen: High carbon stainless steel blade takes an edge well High Tech: G10 handle with carbon fiber layer is strong and lightweight Easy Closing: Liner Lock can be easily closed with one hand Low Profile: Pocket clip provides secure carry Visual Appeal: Blue backspacer and accents