Genuine replacement Firesteel for the UltraFire Knife.  Scraping this rod with a sharp metal edge produces a shower of sparks that burn at 5,500 degrees.   Quickly ignites tinder, and is impervious to weather conditions.   Also makes a great stand alone addition to a survival, EDC or Emergency kit 
 
sold individually. 
 
Size -1/8" x 2" 
Weight 2.6g