uxcell 10Pcs Double End Test Leads Alligator Crocodile Clip Jumper Wire 30cm 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. Easy for installation and safety for use with the insulation plastic boots covered. Crocodile Alligator clips can be used as miniature clamps to hold parts together for gluing and wires together.