Made of metal material, it insures long life, quick and even heating, and reliability. Great to replace the old and broken tip for your soldering iron tool. A great replacement tip for your standard soldering iron.Notice:To maintain the performance of a soldering iron tip, a simple maintenance procedure is recommended: 1.Operate at the lowest possible temperature (800°F (427°C) or lower. Operating at which is one of the major causes of detinning. 2.For tip wiping: use only (sulfur-free) pure cellulose sponges; wet to the touch. 3.Add rosin core solder of adequate diameter to the working end of the tip regularly.