If the screws on the foil are not moved for a long time, there is a risk of contact corrosion. This can also affect the M8 screws that you screw into the sliding blocks, e.g. if you store them screwed in during the long winter break. To avoid any nasty surprises at the start of the new season, PPC Foiling now offers M8 screws made of titanium. These are not only designed to prevent contact corrosion, but are also significantly lighter and stronger than conventional screws. The titanium screws from PPC Foiling are available from the distributor's online shop Haiku Sports . However, the screws do not win the bargain trophy - a set of screws including sliding blocks costs 79 euros.