Hellermanntyton cable ties inside serrated polyamide 66 hellermann tyton 111 15500 the hellermanntyton 111 15500 t150xl is a serrated cable tie manufactured from polyamide 66 this cable tie has an internal serration that allows for a positive hold onto cable hose and pipe bundles the design of the cable tie head guarantees a high tensile strength whilst allowing a very low insertion force this combined with the bent tail design of the ties ensures a simple and quick installation whi