Alligator clip can grip the accessory firmly, the material is copper, which is plated, clam strong and has a very bull spring. the open maximum is 10mm. Test Tweezer: Test leads set also contains a test tweezer. Suitable for resistor, capacitors and other SMD components. Non-slip comfort grip, it is convenient to use with one-handed operation of multi-function testing. Length:15.3cm/6inch. Test probe: The white "cap" Please note the white part is not a cap for the needle. Actually it used for testing easily and protecting you, it has a V-shaped groove, which can also help you fix and aim the wire when you are testing the wire, so it should be flexible. Apply to: Excellent back probe kit can not only be used for car, automotive, vehicle electrical testing, diagnostics, irreplaceable troubleshooting, but also can be used in physics laboratories, schools, homes and industries. Can be Used with your multimeter to back probe harness connectors, and not damage connectors or wires when used correctly., Weight: 0.37037660016 pounds, Manufacturer: Wesafrae