Overall the clamps are very strong and clamp tight but with the extra modifications (some necessary, some not) it took some work to get them just right. I crimped the wires to copper terminal then to insure a proper connection I soldered everything. Bolted the terminal to the appropriate clamp with the supplied hardware (will probably upgrade and add lock washers to make a tighter connection) and then slid the colored boots back onto the clamps. I then had to zip tie the boots in place because they would not stay on their own. Overall I am satisfied with the clamps and they brought my old battery charger back to life.