Very high-quality quick-build screw incl. bit with needle point and fine pitch for fastening gypsum fibreboards / Fermacell® to wooden profiles, metal profiles and Metalstud® up to a thickness of 0.8 mm, black phosphated. The small 60° countersunk head with underlying milling ribs guarantees a smooth finish of the screw head in the gypsum fibreboard, thus enabling quick finishing.