Packaging Includes - 200 gray wire connectors made of high - quality nylon shells and steel springs, greatly enhancing safety and insulation. Applicable Wire - Red (AWG 18-8), Blue (AWG 14-6), Yellow (AWG 18-10), Brown (AWG 22-8), Gray (AWG 18-6). Easy to Use - Say goodbye to soldering! Our wire connectors simplify the wire - connection process. Just insert the stripped conductor into the cap and screw it on. Moreover, the larger double wings reduce the effort during use. Excellent Design - With a spring insert, our wire connectors ensure a secure and stable wire connection, performing reliably in various applications. They tightly grip each wire, giving you a solid connection. Applicable Scenes - These versatile connectors are perfect for lamps, waterproof junction boxes, automobiles, home wiring projects, commercial or residential applications, etc. HKS 200 PCS Gray Wire Nuts - AWG 18-6 Winged Electrical Wire End Connectors - Twist-On Screw Caps Insulated Insertion with Spring Portable & Quick to Connect