Voltcraft ms 4n safety test leads for multimeters voltcraft ms 4n p these voltcraft silicon safety test leads are ideal for use with all multimeters the protective caps on the measuring tips can be removed for measurements in category ii up to 1000v the two coloured double insulation means any damage to the test leads can be detected immediately p p p p p p p ul li 2 highly flexible silicon test leads with test tips li li cat iv 600v li li measurement current up t