The Ideal Wing-Nut 454 Wire Connector accepts 3 #12 to 1 #6 with 2 #8 AWG wire combinations. It's rated for 600 Volt maximum. It has a contoured wing design for secure grip. The 454 has a live-action, square-wire spring. The shell is flame-retardant and rated for 105° C. Colored Blue. Comes in a box of 25.