nVent GARDNER BENDER 25-089 WingGard Ultra Blue Twist-On Wire Connector

DESIGNED TO LAST: Wings are knurled for a sure grip and offset from centerline for greater twisting leverage. Square wire spring grabs and holds wires for secure connections. | DESIGNED TO LAST: Square-wire zinc-plated spring instantly adjusts to the shape and size of the splice | FLAME-RETARDANT TEMPERATURE RATING: Flame-retardant properties resist heat distortion up to 105C / 221F | HIGH-DIELECTRIC: shell features deep skirt design to prevent exposure of bare wire - COPPER TO COPPER connections only | STANDARD RATING: 600V max in building wire and at 1000V max in lighting, fixtures/luminaries and signs