SPAX Countersunk Torx MDF screws are the ultimate screw for solid MDF, giving a professional invisible finish. Only Spax have patented features including a Spax cut head with ground serrations and countersink ribs for ultimate driving power without splitting the wood. The small milling head gives a clean, flush sinking of the screw head for the best possible visual and practical results. Wirox surface with high protection against corrosion, it is free from chromium-vi and therefore is more environmentally friendly that other surfaces. Features & Benefits • Cutting ribs help the head countersink into wood easily • No pre-drilling required even in hard woods • Ultimate holding power • Hard synthetic coating for easy driving • Deeper recess in screw-head for a stronger bit hold Specifications • Diameter: 3.5mm • Length: 40mm • Quantity: 200