DUROCK Mamba Linear Switches are a tribute to the late Kobe Bryant. The colors of the switch are inspired by the colors of the Los Angeles Lakers basketball team. Mamba Switch uses a proprietary POM blend Bottom housing, Nylon UPE blend Top housing with 13.45mm LY long pole stem, and extended gold-plated long spring. This combination of switch materials provides a deeper sound signature while still giving you that smooth DUROCK feel.