Made from premium, durable steel material ensure heavy-duty and longer life use Electro-galvanized finish for increased corrosion resistance and durability Chipboard screws which have deep and sharp thread for cutting through wood easily and cleanly Designed for composite timbers such as hardwood, chipboard, MDF, plastic and thin sheet metal Provides exceptional holding power, use full thread when fixing metal to wood and smooth shank when fixing wood to wood Comes with plastic casing for neat and organize storage