330PCS Solder Seal Wire Connectors-Haisstronica Waterproof Wire Connectors-Electrical Connectors-Heat Shrink Butt Connectors-Self Solder for Marine,Stereo(30Yellow 80White 110Red 110Blue)

These work fantastic! The solder melts as promised. If you need a little extra strength, can put bigger over smaller, and double-up.Really handy to have!

Thankyou, these are good quality and work great.

Works as advertised

These are great connectors, just be aware the solder in them has a pretty low-temp melting point so you wouldn't want to use them in any circuit that might see a high-current draw. I've successfully used these with a small, cordless Ryobi heat gun and been pleased with the results. My father-in-law has an ATV, UTV, tractor-style mower, and zero-turn mower; all of which have certain times of year where they don't get used. We used these connectors on all four to install a 12V power "port" and then setup a bunch of inexpensive trickle charges with the matching connector. The connections have been on the ATV and UTV for a year now and they are still solid - there's no apparent visual or electrical degradation despite the vehicles being used in mud, rain, heat, etc.

Used these wiring my new bike , very convenient and worked as expected, just have to be careful with the heat gun and have good clean connections.