Advanced cutting geometry slash point, anti-walk tip reduces need for pre-drill Serrated threads cut through material, greatly reducing required torque Self-countersinking cutting nibs and true flat head promotes clean finish every time Suitable for use with many materials including PVCu, timber, chipboard, MDF and other similar types Four additional points of contact and does not have the rounded corners Zinc yellow passivation process of electroplating for higher corrosion resistance