IDEAL 72B Blue WIRE-NUT Wire Connectors (100-Pack) 30-172P - The Home Depot

The IDEAL WIRE-NUT wire connectors are the original twist-on wire connectors and feature a positive-grip design for easy installation. Five color-coded models cover hundreds of wire combinations. The fixed square-wire spring provides a secure connection that won't relax over time

Highlights

Standard twist-on wire connector to join and insulate 2 or more wires

Use on bare copper wire

Minimum capacity of 2 #22 wires

Maximum capacity of 3 #16 wires

Requires no pre-twisting

Positive grip for quick and easy installation

Reusable for easy circuit changes and additions

Includes 100 blue wire nuts

Fixed, square-wire spring creates its own threads and maintains a secure positive grip that will not relax over time