I have this test leads only for testing small voltages buy and very small currents and they do as far as their work. However they leave a very small cross-section so that the alligator clips frequently, at my record, I've already 3 pieces must solder again. (With a minimum of stress and also very rare use !!!) Also let the alligator clips not particular good press. The slips you Öftern when compressed, and can it therefore very difficult to connect it somewhere.