Designed for grounding and bonding. Accepts 2 #14 to 3 #12 w/1 #14 AWG wire combinations. Rated for 600 Volt maximum. Contoured wing design for secure grip; Live-action, square-wire spring. No pre-twisting required. UL Listed and CSA Certified. Reusable; Shell rated for 105C. Flame-retardant shell.