4.8 x 63mm Composite Decking Screws with a Coloured Head grade 305 stainless. Head is coated to match coloured composite boards. Ideal for all composite decking boards and pressure-treated timbers where a secure, neat, flush fix is needed. Small head sits beneath the surface of the board, sealing the composite and eliminating rot. Triple thread provides exceptional grip. First thread secures the screw into the joist or substrate, second thread draws swarf beneath the surface of the joist allowing the top board to sit flush and third thread secures board to joist. Supplied with TX driver bit.