Tube support Dia:16mm, 19mm Material:Zinc alloy Surface: Nickle, bronze Good quality and reasonable price Tube supportDia:16mm , 19mmMaterial:Zinc alloySurface: Nickle, bronze We export this item with very large quantities each year to many countries because we have good steady quality and good prices. if there is any inquiry from you, pls. kindly feel free to contact with us, it is our pleasure ...