Features: 1. Brand New High Quality Pre Insulated Crimp Terminals Connectors. 2. Bolt hole design ensure connection reliability;high standard flared opening for easy wire insertion. 3. With these fork spade wire connectors, a drop or two of flux and apply the heat, then a touch of tin and your done, beautiful solder joints you get! 4. If you solder all crimps, our spade wire connectors crimp securely, take soldering iron heat very quickly.