Lifetime warranty! Made In the USA. Manufacturer of pull through knife sharpeners that actually work on all type knives, even serrated! Each set of steels are similar to a butcher steel only crossed at a 44 degree angle taking all the guess work out of sharpening a knife. Comes in 4 types of steels in order to restore, sharpen, hone and polish your blade without ruining your knives. (less)