Amazon.com: Spax 1211010601405 Screw for Wood Construction, 6 mm x 140 mm, T-Star Plus, Cylindrical Head, Full Thread, Cut Point, Wirox A3J 4CUT : Industrial & Scientific
Amazon.com: SPAX Stick Pro 4009422556639 Invisible Decking Fixings on Wood and Aluminium 120 Sticks with Cylinder Head Screws for Approx. 3 m² Black : Industrial & Scientific