18-10 AWG Purple Twister Wire Connector 2 Piece Pack

The Twister AL/CU is the only UL listed aluminum-to-copper twist-on connector that prevents aluminum oxidation while providing a secure connection. Specially formulated corrosion-resistant compound penetrates corrosion build-up on aluminum conductors for increased conductivity and cooler connections. Provides a solution to the problem of connecting copper conductors to existing aluminum branch circuit wiring.