Banded professional screw Syrafast A4 class C5 marine with incredibly precise Ph2 grip for all automatic screwdrivers on the market. Specially treated to make the screw harder during ice screwing, which makes ice screwing optimal. Also waxed for easier tightening. Grooves under the head provide a nice countersink. The cutter tip prevents the wood from cracking The Pro-Point screw is developed for professionals and discerning DIYers. Maximum performance and quality at the lowest prices on the market Pro-Point screws are made for professionals and discerning DIYers. Maximum performance and quality at the lowest prices on the market. We offer a unique GUARANTEE "fits your machine guarantee", which means that we take responsibility for the strapped screw fitting your machine. In the unlikely event that it does not work in the machine, we will take the screw back free of charge without any costs to the customer.