IDeal Al/Cu wire connectors Purple 10 Pk

The IDEAL 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 conductor.
Provides a solution to the problem of connecting copper conductors to existing aluminum branch circuit wiring
Compact, one-piece design features ribbed cap, swept wings and hexagonal head for easy installation by hand or with standard nutdriver
Specially formulated corrosion-resistant compound penetrates corrosion build-up on aluminum conductors for increased conductivity and cooler connections
Aluminum to copper and copper to copper twist on connector - do not use on aluminum-to-aluminum connections
Live-action, square-wire spring expands and contracts with aluminum wiring
For a complete list of approved aluminum to copper wiring combinations, please see additional product resources under more info
Deep skirt provides maximum dialectric strength
Tough UL 94 Volt-2 flame-retardant shell rated at 221°F
UL Listed to 486C and CSA Certified to C22.2 #188