Spectre Advanced Coach Screws. Finish: Zinc Yellow. 3X Faster Than A Regular Coach Screw. Socket Driver Included. No Pilot Hole Required (Some Hardwood May Still Need Pre-Drilling). Quick Start Type 17 Slash Point. Hex Flange Head. Surface Hardened. Anti-Corrosion Coating. 60-Degree Deep Single Thread. Synthetic Lubrication. Ukca/Ce Approved For Use In Load-Bearing Timber Construction.PTDFORDIRSPECS8120Y