SKS Hirschmann 4mm LAS 30 Au Lamellae Plugs Gold Plated 32A - SKS Hirschmann 972 518-701, Laminated, shatterproof red gold-plated 4mm plugs from SKS Hirschmann's LAS 30 series.
These plugs have a caged spring and tapering sleeve which provides protection against kinking.
SKS Hirschmann 972 518-701 4mm LAS 30 Au Lamellae Plugs Gold Plated 32A Red