... :Steel, Iron, PP 3) Diameter:8-10mm Dowel nail for Heat Preservation System1) Standard: DIN, ISO, JIS, GB2) Material: steel, stainless steel ... ) Finish: plain, zinc, black phosphated, grey phosphated, nickel, dacroment10) Packing: box, carton, bag, pallet Contact information:Yuyao Megas Fastener Co., LtdNingbo ... delivery time, Reasonable price,The best service" Dowel nail for Heat Preservation System