N-1/0SP REDITEK #1/0 ALL-PURPOSE SPLIT BOLT. Brand new, Unused, still in box. Comes as a box of 20. All Purpose Split Bolt Connectors are used for combinations of aluminum to copper, aluminum to aluminum, steel to aluminum, copper to copper and steel to copper applications. They have an electro-tinned body. UL Listed for copper and copperweld wires only. Helping clear out old inventory.