Ensure quick and easy installation. The clamp is pulled over the hose to be fitted and then pressed together with the ear clamp pliers.Note:Material W1:Hose clamps in material group W1 are made entirely of coated steel. The coating is equivalent to galvanising, which actively protects the clamps against corrosion by acting as a sacrificial anode. Nevertheless, this material is used in areas that do not place high demands on corrosion resistance, particularly indoors.Galvanised hose clamps have little or only limited resistance to acids, strong alkalis and salt solutions.Surface: Galvanised-blueMaterial: SteelNominal size(mm): 13-15Mark: SSTMaterial: W1Width(mm): 7Contents (pc): 100.