LANSKY Blade Medic (pocket sharpener)The first responder to all field repairs, the Blademedic 4 in 1 sharpener is must have for super quick sharpening on the go. The Blademedic Knife Sharpener is the first responder for field repairs on all types of knife blades. Its like having an entire knife sharpening system right in your pocket able to tackle regular or serrated blades, gut hooks, hunting, fishing, just about any knife using one or all of the following elements: Tungsten Carbide: