Captain Sharp Blade-R-Block. New patent Block knife sharpeners, Our Knife sharpeners have a patent flex in the handles design that able’s the honing rods to adjust to any cutting edge. This hones your blades back to there original cutting edges. Takes the guess work out of sharpening knives. And you can only make a knife sharper when drawing blades threw our honing rods. 100% Made in America, Life time guarantee. Visit our website to learn how we sharpen Pocket knives,Kitchen knives, Swords, Hatchets ,Scissors and odd shaped blades and cutting edges you would never think you could sharpen.