[Save your wrists!] WAGO LEVER-NUTS are lever-actuated, which means that there is no twisting; no taping! [Re-usable.] Because of their innovative design, WAGO LEVER-NUTS may be opened and closed repeatedly with no loss of connection integrity. [UL486C Listed for solid or stranded wire.] These hardy connectors meet or exceed rigorous standards for pull-out, temperature-cycling, vibration and corrosion resistance. [Use them everywhere!] Although they were engineered to meet the demanding specifications of use in factory, lighting, HVAC, appliance, recreational vehicles and more, LEVER-NUTS are priced for convenient everyday use in DiY projects - like yours! [Billions of connections in service!] As the originator of spring pressure technology, WAGO has been the market leader in reliable connections since 1951!