Material: stainless steel 304+iron galvanized combination Head: iron galvanized Belt body: stainless steel 304 Screws: iron galvanized or stainless steel Surface treatment: natural color Temperature: - 80 ℃ ~+250 ℃ Flame retardant grade: absolute fire resistance Product width: 14.2 mm and 20 mm long; Other characteristics: UV protection, anti-corrosion, non-toxic, lightning protection