Colour Family: GREY Assembled Product Length: 2.75" Fastener Drive Type: TORX Fastener Diameter (Imperial): #10 Fastener Length (Imperial): 2.75" . Tri-lobe thread design reduces damage to the composite board while driving • Inverted upper threads clear excess material to ensure the screw is seated properly and consistently • Double-cut point penetrates composite-decking with ease for faster starts • Cap-head prevents mushrooming and material from rising up above the deck for a smoother, clean-looking installation • Ideal for fastening composite decking boards • Approved fastener (by Trex for Trexcomposite decking • Grey • 100 pack