The Master Appliance 51773 Ultratane Butane Refill Canister is a high-quality heating equipment accessory designed for use with LP and butane fuel tanks. With a cylinder capacity of 5.13 fl oz and a weight of 0.5300, this refill canister is perfect for soldering and desoldering equipment. Made by the trusted brand MASTER APPLIANCE, this butane refill canister is a reliable and convenient solution for your welding and soldering needs. The canister is empty and ready to be filled with butane gas for optimal performance.