This is a soldering iron tip sleeve set made of copper material, with reasonable design and practical functions, easy to clean, efficient and practical, not easy to oxidize, and durable for a long time, providing convenience for most of your welding work. The design is perfect and scientific, high strength, durable, and strong. It will provide you with more stable working performance. It is a very practical kit. Features -Color: Silver. -Material: Copper. -Size: About 6.60X2.00X2.00cm/2.59X0.79X0.79inch. -Specifications: I+ +1C+ + 0.8D+1. 1.6D+2.4D+IS. -Fine workmanship, excellent texture, excellent performance, fast heating, strong oxidation resistance, and high precision. -A variety of different soldering iron tip types are used for different soldering points to easily meet your different soldering needs. -Small size, light weight, easy to use, easy to carry and easy to clean. -Safe and practical, durable, suitable for constant temperature soldering station, is a stable and reliable soldering iron tip sleeve set. -Equipped with a sleeve, it is mainly used to install the heating core and the soldering iron tip to protect the heating core from breaking, so that it can be better used. Package list: 1 x socket 12 x soldering iron tips