Twister® wire connector with ribbed cap provides a secure grip and fast fingertip starts. Swept wings offer extra leverage and less effort for large wire combinations. Hexagonal shape accommodates standard nutdriver for tool installation. Live-action, square-wire spring locks onto wire for safe, secure connections. Deep skirt helps protect against flash-over and turned-back strands for maximum dielectric protection. Accepts 3 #14 to 4 #10 AWG wire combinations. Rated for 600 Volt maximum.