Description The Danco Pro Series Knife is the perfect UltraSharp knife for the hardcore angler. The Pro series Flex knife comes in the 7" or 9" option. Each knife is made from an UltraSharp full tang German 4116 steel blade with a Teflon coating and oversized handle. This isn't the standard filet knife that goes dull on you after a couple of uses. The high quality german 4116 blade stays sharper longer so you spend less time sharpening and more time cutting.