Timco C2 Advanced Green Decking Screws 4.5 x 50mm (Tub 250)

This innovative design enables the 4.5 x 50mm screw to rapidly penetrate the timber, cleanly countersink and securely clamp the decking board to the joists. Impact Resistant head - Strengthened head to prevent shearing when installed with an impact tool. Ribs under the head for improved countersinking Helix on shaft for removing debris and improving clamping. Coated with a patented multi-layer corrosion resistant plating to withstand 1000hrs salt spray Patented twin cut technology for rapid ?Pick up? and reduced splitting