Separation obstruction design in the center can ensure the same length of the cables entering at both ends, and transparent design makes it more convenient to see whether the cables are exposed, which can help avoid arcing.Coagulation glue that will solidify and melt when heat shrinking can provide you with more precise wiring, and design of once docking makes this waterproof and heat-shrinkable terminal convenient and safe to use.These heat-shrink butt are made of plastic, which is insulating and anti-corrosion.The length of this set is 10cm, the width is 6.7cm and the height is 2.3cm.It is suitable compatible network, circuit maintenance and so on.Item Name: Heat-shrink ButtsMaterial: PlasticSize Details: Storage Box Size: 10cm x 6.7cm x 2.3cm/3.94" x 2.64" x 0.91" (Approx.)White Terminals: Length: 26mm/1.02", Wiring Area: 0.25-0.34mm2 (Approx.)Red Terminals: Length: 40mm/1.57", Wiring Area: 0.5-1.0mm2 (Approx.)Blue Terminals: Length: 40mm/1.57", Wiring Area: 1.5-2.5mm2 (Approx.)Yellow Terminals: Length: 40mm/1.57", Wiring Area: 4.0-6.0mm2 (Approx.)Notes: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.Package Includes:10 x White Terminals23 x Red Terminals12 x Blue Terminals5 x Yellow Terminals