Product Details：ferrocerium rod Lengt: 4"(100mm),Diameter:3/8"(10mm),Rod Hole:4mm,ferro rod is a combination of flint and steel Ultimate Fire Starter Tool:This survival fire starter can be used in all environments, even in windy conditions and heavy rain, and will last for approximately 12,000 strikes, with a higher ignition rate and less smoke, you will no longer need to buy magnesium rods for kindling. Simple Fire Starting Tools:The fire steel ferro rod is soft enough to be scraped into small rolls of cerium iron to sprinkle on firewood, this fire starter rod doesn't require too long of a striking distance to direct the fire to grass, leaves or paper. Useful Outdoor Tools：emergency fire starter suitable for Bush-craft, Hiking, Camping, Hunting, Fishing, EDC, Emergency, BBQ, Gas Camp Stoves, etc.Waterproof fire starter flint for use in wet conditions,Can cope with any emergency situation without an ignition source. Easy to Carry: ferro rods are lightweight and easy to carry, does not contain blades, Keep it in your pocket, backpack car glove compartment or made into paracord bracelet to carry, can also be used as a backpacking fire starter, DIY your emergency camping hiking survival fire starter. 1