SureGrip Fused Test Probe and Test Lead set with built-in replaceable fuses for additional measurement protection. If the probe fuse does blow, these fused test probes will still allow the meter to indicate live voltage, helping to prevent a possible misreading of no voltage present. These modular probes ship with the Fluke TL224 silicone test leads. Rated to CAT III 1000 V, these probes have removable tip guards for reduced probe tip exposure.