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 105 C; Flame-retardant shell