Direct to Attach The canister contains a universal pin that may be used to connect it directly to all types of common tools, including a stove, flame torch, and soldering gun. Hassle-Free Installation Simply push and turn the self-sealing safety valve onto the cartridge until you hear a click to ensure a tight and secure connection. Easy Removal The cartridge can be removed and re-attached, even if not yet empty. An ideal solution if you need to operate multiple devices or transport your cartridge between uses.