Spectre™ Advanced Deck & Outdoor Screws feature a countersunk pozidrive compatible recessed head. They have a green coated finish for excellent resistance to corrosion. These screws have a sawtooth thread to prevent splitting reamer to prevent jacking and are also surface hardened with a quick start type 17 slash point. CE approved for use in load-bearing timber construction.Spectre™ Advanced Deck PZ Compatible Screw CSK. Green coated finish. Specifications: Size: 4.5 x 75mm. Pack Quality: Box 200.PTDFORSPDS4575G