Kuject120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint

I have to say for the price these are a must in any automotive workshop, very simple and straightforward to use with a heat gun and a surprisingly strong watertight joint for not much effort.... I will never use my crimping tool with connectors again these give a very solid joint with no fuss.

The Kuject 50PCS Solder Seal Wire Connectors have been a game-changer for my electrical projects. These waterproof heat shrink butt connectors are incredibly easy to use and provide a secure and reliable connection for marine, automotive, boat, and truck wire joints.The self-solder feature is a game-changer, eliminating the need for an extra soldering tool. All I need to do is insert the wires, apply heat, and watch the magic happen. The solder sleeve ensures a solid bond, leaving no room for error.I appreciate the extra peace of mind these connectors offer with their waterproof properties, making them ideal for use in various weather conditions and environments.The 50PCS assortment provides a good range of sizes, giving me options for different wire gauges and joint sizes.Overall, the Kuject Solder Seal Wire Connectors have made my electrical work much more efficient and reliable. I highly recommend these connectors to anyone looking for a hassle-free and effective solution for wire splicing and connections.

Not sure if it's the solder or the heat shrink that's holding the wires tightest but it's effective and makes joining wires simple. Solder in it has quite a low melting point so takes a bit longer than you might expect to harden again (give it a minute). I tried bodging 4 wires in one connector and it's still holding them solid. Personally I wouldn't trust it completely to insulate the wires, I think I'd put another heat shrink sleeve over the top because I'm not certain the solder part won't melt through and it'd be difficult to spot.

Very easy to use and make a strong connection... Great value for the price

excellent worked perfectly

Just surprised the dog hasn't missed em yet.

quick and easy water proof joint with heat gun

I have used similar before but found the smallest connectors very hard to heat enough to melt the solder without the outer plastic becoming molten.Yes. I used a heat gun.