ITEM NAME:Stackable Banana Plug to Copper Alligator Clip Multimeter Test Leads Probe WiFT #aucsearchbutton #aucsearchbutton:hover { cursor: pointer;.†¢ Material: Copper. †¢ Plug size: 4 mm. †¢ Can be used in electrical or laboratory electric testing work. †¢ Useful for connecting components to wires. Key features †¢ Suitable for: Testing.