Easy to use, can be applied using square drive driver bit in a power tool. No. 2 square drive, self drilling type 17 point. Has countersunk ribbed head that self embed and can be driven flush with timber surface or countersunk below the surface. 2/3 coarse thread and unique head design provide maximum holding power in softwoods with a neat, clean finish. ChemShield coating provides corrosion resistance for external applications. Approved for use in ACQ treated timbers. APPLICATION: For fixing treated pine decking, flooring, slatting and general timber to timber external applications in treated timbers END USER: Builders, Carpenters, Landscapers DIYers FEATURES: Cold forged and roll formed, countersunk heads with nibs, coarse thread 2/3 of shank length, type 17 point made from hardened wire with engineered ChemShield finish