uxcell 10Pcs Double-ended Test Leads Alligator Crocodile Clip Wire 33cm Alligator Clip Test Lead can be used in electrical or laboratory electric testing work. Alligator clips are frequently used in school physics laboratories to quickly and cheaply assemble circuits They are useful for connecting components to wires. Crocodile Alligator clips can be used as miniature clamps to hold parts together for gluing and wires together. Easy for installation and safety for use with the insulation plastic boots covered.