500 Zwischengeschoss Terrassendielen Flügelschrauben, selbstbohrend Gewindeschneiden 5,5 x 85 mm
5.5 x 85mm CSK Hd w/Rib Tek 3PT. 500 Winged Tip Screws. Wings cut clearance hole in wood then snap off when they reach steel, preventing wood from 'jacking-up'. The self-drilling tip then drives into the steelwork creating a firm fixing.