Features 1、WATERPROOF AND INSULATION: The outer polyolefin tube provides insulation and improves the pull out strength, and the inner hot melt glue and solder ensure that the wires are tightly connected and prevent the wires from slipping out of the terminal 2、EASY STORAGE AND CARRYING: The connector is housed in a storage box for easy storage and carrying. Color coded tubes make it easy to identify the appropriate connector size for each application 3、WIDE RANGE OF APPLICATIONS: The shrinkage ratio is 2: 1, which is very suitable for automobiles, ships, ships and other outdoor applications 4、4 COLORS TO USE: There are 4 colors of heat shrink butt connectors with different quantities for you to use, very convenient 5、TRANSPARENT SHELL: Come with transparent shell, you can see the inside, which is convenient for wire connection Specification Item Type: Heat Shrink Butt Connectors Model: 100Pcs Product Parameter Specifications: 10 x Yellow Connector 30 x Blue Connector 35 x Red Connector 25 x White Connector Package List 100 x Heat Shrink Butt Connectors