PN 371 (IS) (A) Expandable Internal Shock Absorber Twin Lanyards Ref : PN 371 (IS) (A) Made of 44mm Tubular webbing. Relaxed Length 1.4m to 1.6m & Expanded length 2.0m. Conforms to EN 355:2002. Attachment: PN 112 at one end and Aluminum Hooks PN 136 at other ends.