A premium decking screw using the C2 twin-cut technology. Coated with a patented multi-layer corrosion resistant plating to withstand up to 1,000 hours in a salt spray cabinet. This new and innovative design enables the screw to rapidly penetrate the timber, cleanly countersink and securely clamp the decking board to the joists. Features Strengthened head to prevent shearing when installed with an impact tool Ribs under the head for improved countersinking Helix shank for removing debris and to improve clamping Coated with a patented multi-layer corrosion resistant plating to withstand 1,000 hours salt spray Patented twin cut technology for rapid "pick-up" and reduces timber splitting Specification Head Type - Countersunk Tub Pack Qty - 250 Recess Type - TX Drive Bit Type - T20 Colour/Plating - Organic Green Size - 4.5 x 50mm KINDLY REMINDER: Delivery to the UK Highlands, Channel Islands, Northern Ireland, Isle Of Wight, Isle Of Man and the following postal code areas: BT, FK, KA (1-30), PA(1-49), PA(60-78),PA80, PH, PH(11-40), PH(41-44), PH(49-50), AB, IV, KW, ZE, GY(1-10), JE(1-5), PO(30-41), IM, IR, HS are excluded from our standard delivery charge and may incur extra costs.