Easy to use, can be applied using a No.2 Phillips screwdriver or No.2 Phillips bit in a power tool. Countersunk head with nibs to self embed into fresh cement sheet. Steel self drilling with self tapping thread for cement sheet to metal applications. Zinc gold plated for general indoor corrosion resistance. APPLICATION: For fixing cement sheet or blueboard to metal END USER: Builders, Carpenters and DIYers FEATURES: Cold forged and roll formed, countersunk heads with full thread, drill point made from hardened wire and passivated electroplated zinc finish