Specification: 500pcs Mixed Solder Sleeve Heat Shrink Butt Wire Splice Terminal Connector An easy one step connection of wires, soldered, insulated and sealed Fast, efficient, no crimping required Solder and seal and with advanced waterproof function Transparent heat shrink sleeve allows for precise visual inspection Greater pull strength Ideal used in electronics, railway, marine, automobile, motorcycle, aerospace and other outdoor applications Storage in a plastic case for easy access Color: Red, Blue, White, Yellow, BlackPackage includes: 50x Red Solder Heat Shrink Sleeve 50x Blue Solder Heat Shrink Sleeve 40x White Solder Heat Shrink Sleeve 20x Yellow Solder Heat Shrink Sleeve 340x Black Heat Shrink SleeveNote:Please allow 1-10mm difference due to manual measurement.Due to light and screen difference, the item's color may be slightly different from the pictures. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.