ZODORE 2pieces MC4 spanner/ wrench 100% copper socket Spanner for solar connectors Assembly Disassembly Unlock / Tightening / Latching solar MC4 tools 2 pieces MC4 connector assembly spanner. Assembly Disassembly Unlock / Tightening / Latching solar MC4 tools Best used for our MC4 connectors, Designed according to the human factory engineering, it can save 60% energy when crimping 100% copper socket Spanner