zinc alloy door viewer 1) Delicated quality 2) Good appearance zinc alloy door viewer1)Diameter:14mm,16mm or optional2)Material:Brass or Zinc alloy3)Color: chrome,satin nickel, brass4)Degree:180 degree or 2000 degree5)Covers: optional6)Packing:1pc/small box,10pcs/inner box,100pcs/carton zinc alloy door viewer