Hellermanntyton 1 piece fixing ties with arrowhead and wings for round holes hellermann tyton 111 85519 the hellermanntyton 111 85519 t18rsf is a 1 piece fixing tie with arrowhead and wings the arrowhead design in conjunction with the supporting legs ensure a firm and secure fixing the legs take up any variation in panel thickness enabling one part to suit many applicationsideal for the bundling and fixing of cable harnesses pipes and hoses in the automotive aerospace white goods in