Cal Test Electronics CT4422 Fused Probe DMM Electrical Kit features a 1000V 500mA fast-acting fused probe designed to protect both equipment and personnel. The small probes have an internal ceramic fuse, which cuts power in the event of a transient overvoltage. When the locking cover is in place, only 4mm of the tip is exposed to reduce short circuits and arc-flash risks in high category environments. The fused probe and alligator clips are rated 1000V CAT III / 600V CAT IV. This kit includes a unique locking tip cover, fully insulated medium alligator clips that fit conductors up to 7mm, and silicone-jacketed, straight to right-angle 4mm sheathed banana plug test leads. Cal Test Electronics CT4422 Fused Probe DMM Electrical Kit can be used for both handheld and bench digital multimeter (DMM) applications.