Labstock Brand Jumbo Firesteel DIY Pack, 3/8 X 4 Inch, Set of 4 Pack of 4 extra large firesteel rods, 3/8 x 4 inch size, more effective striking area then smaller firesteels. Produces a shower of 3000 C sparks when rubbed with high carbon steel (like knife blade) Unlike matches or lighters, these will function when wet or in high wind Sparks will quickly ignite dry tinder (cotton balls soaked in Vaseline, etc) Customize your own handles of bone, antler, hardwood etc. A great project for woodsmen of all ages!