Spectre Advanced Deck & Outdoor Screws. Head: Countersunk Pozidrive Compatible Recessed. Finish: Green. Anti-Corrosion Coating 1000 Hour Salt Spray Tested. Reamer To Prevent Jacking. Sawtooth To Prevent Splitting. Quick Start Type 17 Slash Point. Surface Hardened. Synthetic Lubrication. Ce Approved For Use In Load-Bearing Timber Construction.PTDFORDIRSPEDS4560GT