A pair of alligator clips (in red and black) with nickel-plated, hook-shaped clips.
As these clips are hooked, they provide an excellent connection to what you're testing. The profile of the clips narrows to 5.6mm at the tip, with a hook opening of 6.4mm at the front and 2mm at the base.
Although recommended for use with Fluke TL222 and TL224 test leads, these clips should work alongside other manufacturer's leads with standard banana jack connectors.
The clips are CAT IV 600V, CAT III 1000V and 3A rated.