The Versa-Torch is the most versatile system on the market. This system features a lightweight handle that is guaranteed LIFETIME. What makes this system versatile and desirable is the availability of a broad selection of attachments suitable for a wide range of applications. You do not need to purchase separate handles, hoses, flashback arrestors, etc for every type of work. With the Versa-Torch™ system you can use the same base component to do soldering, casting, melting, brazing and annealing. To switch from one job to another, simply disconnect the tip and replace it with the appropriate one, and you are set to go. All Versa-Torch™ systems use fuel and oxygen. Acetylene or hydrogen systems are recommended for platinum. The Versa Torch is one of the few torches that work with low pressure natural gas (city gas). To set up a system, first start with the handle. Next add the tip tube for the type of gas you are using. Finally add the tips for melting and for soldering for the same type of gas; or simply choose the complete systems with all tips.