WaterproofSolderRingHeat Shrinkable Middle Tube Solder Terminal-Welded Connector Product Wide applicationSolder Seal Electrical connectors are ideal not only for electronics, railroad, marine, automobile, motorcycle, motorcycle, aerospace, but also for other industrial and outdoor applications, etc. 5 colorsThe package contains red waterproof cable connectors, blue cable connectors,yellow cable connectors,white cable connectors,black cable connectors, different colors provide convenience to identify Practical and safe to use ----- The transparent sleeve enables more precise stripping and insertion of wires. After heating, the adhesive fills gaps in the connection, ensures a tight connection and prevents wires from slipping out of the connector. The isolated design saves you from worrying about electrical leakage Premium quality ----- sealing wire connectors consist of thicker heat shrink tubing with a combination of low temperature fusion soldering sleeve. The solder gradually flows as it heats, and the insulation tube shrinks to create a watertight seal. Wide Applications: Our solder wire connectors are ideal for your boat, vehicle, airplane, home, and even scientific projects that ensure solid soldering Specification: The shrinkage ratio is 3: 1 Temperature starting to shrink: 80 C. Temperature at which the soldering ring begins to melt: 118 C. Temperature at which the solder ring melts completely: 160 C. Note: This means the temperature of the surface of the connector, not the temperature the heat G un should set. Products include: 1 box of solder terminals Note Step 1: Insert two ends of the cable into the connectors and position them Step 2: Move the connector to the center of the conductor and heat it Tools: With a hot G un. No crimping necessary Note: No soldering No crimping No lighter