They appear to be of decent quality. However, they are actually better suited for other general clamping applications than as electrical cable clamps. They have no facilities to easily attach the wire. I've noticed that most of the other reviewers use them as general purpose clamps rather than electrical wire clamps. You will work well for it. They're supposedly coated to prevent oxidation, which is especially good in electrical applications. To use them for their intended purpose - electrical test lead terminals - I had to drill one of the small holes in the base, thread a bare wire through it, then bend the wire back and solder it to the terminal. If I were to buy more of these clips I would first make sure they have a screw in the base to hold the wire.