The AXIS K/S-Series Foil Base Plate 19mm mount is made with high grade Aluminium, 3d CNCed and anodized. This is not your off the shelf plate mount. This is a beautifully engineered and very stiff piece, designed to hold the mast of your foil tightly and strongly.
Multiple holes give you flexibility with positioning on your foil board. And the sliding endings, let you remove the plate by just loosening the screws, w/out having to fully unscrew the M8 bolts from your board.