Description: Iron tips are made of copper which is electroplated Iron and Nickel in case of oxidation and rust under high temperature, characterized by heat-resistant up to 480℃, Lifetime over 20000 welding joints with appropriate use. There are 12 types of soldering tips in this set and you can choose the proper one for different soldering needs, for example, b all-round type which can be used from any direction and is easy to hold at any position, possible to solder any surface from small to large; and k type has a shape like a knife and is capable of soldering by applying the tip in 3 ways: line, face and point, it is used for soldering at narrow pitches, correction of bridging and drag soldering. Get this set of tips and add a versatile "assistant" in your tool kit! Feature: Made of high quality oxygen-free copper which is of fast conductance and heat resistance up to 480℃ for durable use. Iron tips are plated Iron and Nickel which prevent them from oxidation and rust under high temperature. There are 12 types available from which you can choose the proper one for your different soldering needs . It has high stable and long-lasting performance, not easily wear off. Easy to carry and clean, just use the sponge to polish, do not expose to the air naked and put them on the shelve if you are not using it, small size and lightweight. Specification: Material: Copper Color: Silver Plating: Iron and Nickel (Finish) Outer Diameter: approx. 6mm / 0.24" Inner Diameter: approx. 4.0mm / 0.16" Length: approx. 43cm / 16.93" Package Weight: approx. 77g Model: 900M-T-K, 900M-T-B, 900M-T-I, 900M-T-1C, 900M-T-2C, 900M-T-3C, 900M-T-4C, 900M-T-0.8D, 900M-T-1.2D, 900M-T-1.6D, 900M-T-2.4D, 900M-T-3.2D Applicable to: 936, 937, 938, 969, 8586, 852D soldering iron Temperature Range: 200-480℃ Quantity: one piece for each type, 12pcs total per bag For storing used iron tips Use sponge to clean iron tip. Wrap them with tin solder. Turn off the power supply and wait until they cool. Put iron pen on the iron shelve. Package Included: 1x bag of 12pcs Iron Tips .