The Fluke TLK290 flexible socket probe set includes three flexible socket probes and a large alligator clip for use with 4 mm (0.16") shrouded test leads. The test probes are for use on motor and three-phase sockets. The probes have a flexible test point that fits securely between 4 mm and 8 mm (0.16" and 0.32") sockets. The alligator clip has an opening of 20 mm (0.8").