The 30-076 is a Wire-Nut® Wire Connector with red thermoplastic. This 76B series closed end splice supports twist on termination and accepts 14 to 12AWG wire. The fixed square-wire spring creates its own threads-maintains a secure positive grip that will not relax over time. No pre-twisting required-positive grip design provides fast, easy installation. Deep skirt helps protect against flash-over. Reusable for easy circuit changes and additions. It accepts 2 #14 to 4 #12 AWG wire combinations. Tough, UL94V-2 flame-retardant shell rated at 105°C -Rated for 600V maximum.