... ================================================1)Size:3/4”-3”2)Gauge:BWG12-BWG83)Head size:1”-3"4)Shank:Electrogalvanized ring ,plain , ... Material:low-carbon Q195&Q2356)Surface treatment:electro galvanized.7)Head colour:red,green,blue,white,yellow,purple,and ... 11)For anchoring housewrap,sheathing,and felt.wide head and ringed shank for greater holding power.Grip-Cap ...