Easy to use, 5/16” socket for 10 and 12 gauge or 3/8” socket for 14 gauge or appropriate driver bit in a power tool. Self drilling type 17 point can pierce light gauge steel up to 0.6mm. Hex flanged heads with EPDM washer provide optimum holding power and seal out wind and rain. EPDM washer designed for optimal performance in temperature extremes, UV stabilised, high elasticity, low carbon content to minimise/eliminate conductivity. Mechanical galvanising to Class 3 as per Australian Standards. APPLICATION: For fixing roofing and cladding to timber END USER: Plumbers, Roofers, Builders, Fencers and DIYers FEATURES: Cold forged and roll formed, hex flanged head with EPDM washer, coarse thread with type 17 point, made from hardened wire and Class 3 mechanically galvanised finish