The Guilbert Express 8191 is a gas torch cartridge. Containing 190 g of butane, it is suitable for any applications that requires butane such as soldering iron, soldering torch or the like, that utilizes a type 200 butane gas cartridge. This system restricts gas leaks, as it can be disconnected from different devices that uses butane gas to operate. The compact framework of this cartridge makes it easy to carry and utilize. In addition, the 8191 is specifically engineered to work with blowlamps express in accordance with Cat. No. 8700, 8800 and 8900.