When Xikar says their cutters are ``the best thing to happen to cigars since fire``, they`re not kidding. All Xikar cutter blades are made of high quality 440 stainless steel with an HRC (Hardness Scale) of 57 and free sharpening from the company for life. The X3 Tech features a ball blasted aircraft aluminum body with ergonomic rubberized handles . Xikar makes the cutters by which all others are judged. Like all Xikar products, the X3 Series comes with a lifetime warranty.