Description This heat shrink connector kit can be used in different wiring projects. The heat shrink butt wire connectors have high-quality and could be applied in wet environment like boat or in your daily life. You can use them for home application as well as science projects. Features - Color: As shown. - Material: Plastic and tin ring. - Size: 4.00X0.80X0.80cm/1.57X0.31X0.31in - Solder seal connection perfect fit in every application. - The color codes of these heat shrink tubes enables easy selection for the correct application. - Polyolfin tube shrinks with heat and provides sealed structure to protect the wire inside. - Due to high waterproof, these tubes are commonly preferred in automotive sector as well as marine sector. - Solder seal wire connectors can also be used in the house, and school.Package list: 50 x White Solder Heat Shrink Sleeve 70 x Red Solder Heat Shrink Sleeve 60 x Blue Solder Heat Shrink Sleeve 20 x Yellow Solder Heat Shrink Sleeve 420 x Black Heat Shrink Sleeve