These MC4 test leads are a great choice to use along with your Seaward Solar testing equipment or testing equipment from other manufacturers. The test leads feature Multi-Contact MC4 connectors. The alligator clip probe adapters are can be a very handy addition. Test leads featuring standard solar connectors really make a big difference in the field, helping to free up your hands and save time. It’s recommended that an MC4 Spanner tool is also used to unlock the MC4 connectors after testing is complete.