TurboGold Yellow zinc-plated Carbon steel Wood Screw (Dia)6mm (L)180mm, Pack of 50. Top quality, waxed single thread, multipurpose screw. Popular with the professional as it features a lower screw-in torque and faster drive speed. Suitable for screwdrivers, combi drills and impact drivers.. This pack of Prodrive drive recess double self-countersunk heads are constructed from a durable carbon steel, 180mm in length and come wax coated. They\'re ideal for a range of DIY applications. Woodscrews by TurboGold.