Package included: 60 T branch connectors and 60 flat plugs included. Comes in blue, red, yellow three different colors, easy to identify and classify. Material: The shell is made of high quality nylon. It keeps open flame and electrically insulating. The conductive piece is copper, which has perfect electrical conductivity. Easy to use: Fast connection and organization of wires in 1 minute. No cutting or stripping wire, no soldering and sealing required. Save a lot of time and energy. Easy to sort: Available in 3 different sizes and color-coded tubes, comes with a practical plastic box, with separate compartments for each connection, easy to classify and use. Wiring area: Different color connections match different cable sizes: red, blue and yellow. Can be used separately for different cable types. Suitable for cable / wire sizes Red T-branch connector kit: 0.5-1.0 mm / 22-18 AWG; Blue T-branch connector kit: 0.75-2.5 mm / 18-14 AWG; Yellow T-branch connector kit: 4.0 mm / 12 AWG.