The Pyro Putty Ferro Rod Kit is small and lightweight. It's an all-inclusive unit to light a fire that has a hollow tube to store putty, plus a built-in carbide striker. It is waterproof and is designed to burn through sleet, rain, wind, high altitudes and a wide range of temperatures. Includes two free .50 oz tins of Pyro Putty- Summer Blend and Winter Blend.