Features: 1No solder no curl you only need heat guns to complete the connection faster and easier than the old method 2Simply put the two stripped wires into the welding sleeve and heat them with heat guns to complete the connection 3There is no need to crimp when in use the insulating tube will shrink and the shrinkage ratio is 2:1 forming a waterproof sealing 4Suitable for narrow spaces and can be bent after connection. There is no need for crimping or welding in narrow areas only the temperature can be controlled by heat guns 5Due to their water resistance these wire connectors are usually the first choice in the automotive and marine industries and can also be used in vehicles homes or scientific wiring projects Specification: Item Type: Waterproof Wire ConnectorsProduct Material: PEProduct Specifications and Quantity:10 x White Waterproof Wire Connectors23 x Red Waterproof Wire Connectors12 x Blue Waterproof Wire Connectors5 x Yellow Waterproof Wire ConnectorsWeight: Approx. 42g/1.5oz Package List: 10 x White WaterproofWireConnectors23 x Red WaterproofWireConnectors12 x Blue WaterproofWireConnectors5 x Yellow WaterproofWireConnectors1 xStorage Box