The Weller XHTD 0054480199, Chisel Solder Tip, features a 5.0mm x 1.2mm Tip Diameter, solid copper plated with iron all over, and nickel and chromium behind the working surface. The 0054480199 is designed to provide maximum heat transfer from the heater to the tip and is individually bagged. Meant for use with the WXP200 Solder Iron.