Plated with lead-free solder.Lead-free alloy iron electric plating close-grained.The tip size very precise.Good performance in tin-on and tin melting.Solder joints uniform, and fluent soldering.High anti-oxidation, good moist performance, quick thermal conductivity.High strength and hardness.Durable in use.For heavy series soldering irons.Length: approx. 15mmMaterial:metalColor:silverPackage Contents:2 x T12-K soldering iron tip2 x T12-KU soldering iron tip2 x T12-KF soldering iron tipOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.