Multihead: Cutting ribs help the head countersink into wood easily. Screw head ribs help reduce the thread being stripped when fixing hinges etc. Deeper recess in screw-head for a stronger bit hold. 4CUT Point: No splitting even when working close to the edge. No pre-drilling required even in hard woods. Screw point takes immediate hold. Ground Serrations: Reduces driving in torque. Hard synthetic coating for easy driving. Ultimate holding power. Increased flexibility - For universal use in wood, chipboard, MDF, plastic and even thin metal sheet!