The product exceeds my expectations completely. I can make a fire really fast after some trial and error. I had another fire steel, but with whom I have never made it. In addition to "Light my Fire Firesteel" one needs only a sharp knife and a piece of dry wood. With the knife at right angles just scrape over the wood and create a little "wood wool". A few more pieces in the thickness of a match, and then scrape firmly over the fire steel. And you've got fire. The fire steel is perfectly adequate in terms of size. Length: 77 mm Length steel: 43 mm and 6 mm in diameter I've already used it a few times, but until it is used up, I will definitely need a few years.