MLS WS 50/2.5 Stackable 4mm Measuring Lead, 50cm. Hirschmann Test and Measurement MLS WS 50/2.5 4mm measuring leads have a 4mm diameter safety connector either end that is stackable. These 50cm long MLS WS 50/2.5 measuring and test leads have a nickel plated copper beryllium contact spring, highly flexible,double insulated stranded lead and a shatter-proof sleeve. The test lead cable has a built in colour indicator for easy identification of insulation damage by means of a different coloured inner core of insulation. Rated voltage 1000 VAC/DC Rated current 32A CAT II (600 VAC/DC, CAT III) PVC Insulated 50cm in length Wire stranding 320 x 0.10mm Contact resistance 8 m