Chipboard Screws Drywall Screws Our entire range of fasteners are made of carbon steel, alloy & stainless steel, aluminum, brass, and other special materials. Production is carried out in compliance with DIN, IFI, ANSI/ASME, BS,ISO,JIS specifications Packing: G.W.: 25Kgs/Carton In Wooden Package or Small Mail Box According to Customer Inquire Surface treatment: plain, black, zinc, hot dip galvanized, dacromat, elctro galvanized etc.,