EXTREME PERFORMANCE WOODSCREWS – Our Optimaxx hardened steel wood screws are sure to be the keystone of your next project, our unique features means that no splitting, snapping, pilot hole, or pre-drilling is needed. DOUBLE REINFORCED COLLAR – Significantly strengthens the underside of the head, preventing snapping and allowing a deeper Pozi recess. SELF COUNTERSINKING HEAD – These wood screws have unique 24 grooves cut into the underside of the head allowing them to self-countersink into all materials without the need to counter bore and without surface damage. RAZOR SHARP SAW-TOOTH FORMATION & POINT – On insertion the threads bite into the timber reducing torque and resistance, enabling fast penetration without a pilot hole. The sharp point gives you an immediate precise start even with the hardest and smoothest surfaces. FINISH – The sharp and deep thread formation is coated with a unique lubricant facilitating fast continuous insertion and protecting the wood screws against corrosion for improved durability., Manufacturer: Optimaxx