The Axis Baseplate is made of high quality, 3D machined and anodized aluminum. This is not a standard mounting plate. It is a beautifully designed and very rigid piece of hardware, designed to hold your foil mast firmly and securely. The multiple holes give you great flexibility for positioning on your board. The sliding ends allow you to remove the plate by simply loosening the screws, without having to completely unscrew the M8 bolts from your board.