Flame Engineering Weed Dragon Vapor Propane 100,000 BTU Outdoor & Brush Torch KitFully assembled and ready to go. Great for around the home and garden. The 100,000 BTU torch kit is the perfect size for homeowners who don't need the power of a farm torch. Flame weeding is a great way to reduce or eliminate herbicide use where children and pets could be exposed and is safe and easy. Use with a large or small cylinder (not for use with a disposable cylinder). CSA certified for the U. S. and Canada. Requires standard vapor withdrawal