With inline safety socket. Socket Ø 4 mm. Either end of the interchangeable insert can be used. The inset is already screwed in (PRUEF 2013 Ni). One end has a 5 mm spring-loaded steel tip, the other end a rigid, hardened steel tip with a Ø 4 mm lamella basket plug. Including tip protection cap SSK 2002. Contact parts: nickel-plated. Tip: steel. Insulation: PA 6.6 (Polyamide)