The mounting plate is made of metal and features the Tetralock fastening system along with Quick Release for the top case. It consists of four metal pins on the metal plate that fit slide-in with one motion into the special metal receiver located at the bottom of the top case, thereby maximizing the secure attachment of the top case onto the plate.
The metal pins of the Tetralock have a thick casing made of durable ABS material specifically designed to absorb the vibrations of the top case. Additionally, the Quick Release mechanism of the top case allows for immediate attachment and detachment onto the plate with one motion and locks with a key to prevent theft.