The 900M-T-3CM part of Unbranded is a soldering iron tip sold by Unbranded. It is made of copper, is 3 cm in length, and has a 900M tip. It is suitable for use with the Unbranded soldering station, as well as other soldering equipment. The tip is suitable for a wide range of uses, including electronics work, electrical work, plumbing, and craft projects.