EASY CONNECTION: T-Tap self-tapping electrical connectors, insert the wire into the connector and use the pliers to pinch it until it clicks PREMIUM MATERIAL: Insulated connectors The shell is made of high quality nylon. It keeps the flame open and is electrically insulating. The conductive part is made of copper which has perfect electrical conductivity. Features: Quick plug connectors are suitable for many wiring projects.The range of connectors includes red (AWG 22-18), blue ( AWG 18-14) and yellow (AWG 12-10), which are suitable for AWG 22 to 12 cable can be used. WIDE APPLICATIONS: Marine, automotive, scientific and household wiring projects - you name it. The T TAP connector kit gives you quick access to any cable in any application. Package includes: 60 T-connectors and 60 flat plugs included. Comes in blue, red, yellow in three different colors, easy to identify and classify.