Solder tips structure make better heat transfer performance, having good ability to hanging tin. Comes with strong antioxidant capacity keep longer life. With different shapes and sizes, this special soldering tip set can achieve almost any soldering application you need. Features - Color: Silver. - Material: Copper. - Size: 4.30 x 0.60 x 0.60cm/ 1.69 x 0.24 x 0.24 inch. - The internal structure of the soldering iron tip is hollow, using lead-free and oxygen-free copper material, which heats up quickly, resists oxidation, and has a long life. - The constant temperature soldering iron head sets is suitable for welding in different positions and can produce various types of solder joints. - The single weight of the electric iron head is light, easy to install and use. - And the metal fittings made of copper are easy to dissipate heat and easy to clean. - Can be used as a perfect replacement for old or damaged soldering iron heads.