Spyderco Endura® 4 Lightweight Flat GroundIf you already own an Endura, you have one of the best selling knives Spyderco makes. The knife you have just acquired is a bit different from the normal C10 Endura4 Lightweights. They are now available in a range of new handle colors with full flat ground blades. Their FRN (fiberglass reinforced nylon) handles come in new vibrant tones including blue, green, brown, gray and purple. Molded onto the handle's surface is Bi Directional Texturing for slip