Die-cast aluminum with a rubber-coated bullet. Screws included No, but the cost not really much and must be adapted to the own request as a purpose anyway.
I just made my aluminum sheet a counter plate, four holes drilled pure, completed was the DIY's GPS Navitaschenhalter. Cheaper than having to buy a new Navitasche with Ball Head. ;)
Strong buy recommendation due to the build quality and compatibility with the other RAM Mount products.