Security Door Chain 1)Material:Zinc 2)Size:138x50mm 3)Finish:SC,SN,BP,AB,AC 4)Suitable for Wooden door,Interior door Security Door Chain1)Material:Zinc alloy2)Size:138x50mm3)Finish:Satin Chrome,Satin Nickel, Polished chrome,Brass Plated,Antique Brass,Antique Copper4)Suitable for Wooden door,Interior door, Ecological door Security Door Chain