Plastic seal SLS05-01 Material :Polypropylene and steel Frame: The interior of the lock clasp, which part is black on the picture is round a turn with steel tooth spring.Because of the steel tooth spring it can be used in good ,and cant be influenced by the weather. Total length(L):380mm and 280mm Tensile strength: F>250N Logo: it can be printted with your logo which is customized on the surface of the head. Colors:red ,yellow,green,blue ,white. Price(FOB SHANGHAI): L=380mm USD 0.08 L=280mm USD 0.07