Features; • Reduced head for concealed countersinking • Plain shank for pulling the two substrates together without manual clamping • Coated with a high-molecular polymer lubricant that reduces the insertion torque by up to 52% and increases rust protection up to 20 times longer than a standard zinc plating • Dual angle thread for ultimate performance and exceptionally high pull-out resistance • Patented twin cut technology for rapid “pick-up” and reduces timber splitting