PN 371(IS)N Expandable Internal Shock Absorber Twin Lanyard Ref : PN 371(IS)N Width & Made of – 44mm Tubular webbing. Length – Relaxed Length 1.4m, 1.6m & Expanded length 2.0m. Attachments – PN 112 at one end and Scaffold Hook PN 131N at other ends Conforms to – EN 355 : 2002, EN 354 : 2010