This is a set of solder seal wire connectors, made of materials, with long-term durability, and can serve you well. The solder seal wire connector is solderless and , which much of your time when you are using it for your project. Besides, you can also use them in hard to reach or limited space environments easily. Features - Color: Assorted. - Material: Polyolefin, tin. - Size: About 4.00X0.70X0.70cm/1.57X0.28X0.28inch. - Working temperature: -55 degree centigrade~125 degree centigrade. - Full shrinkage temperature: 130 degree centigrade. - Solder melting temperature: 125 degree centigrade. - Full melting temperature of solder: 150 degree centigrade. - Shrinkage ratio: 2:1. - No need to crimp, the sleeve provides precise inspection when strip and insert wires inside. - Polyolefin tubing in outside and hot melt rings in inside effectively improve waterproof performance to make sure the best results. - Tubing reduces in size and solder will melt and flow through the stripped wires, ensure strong holding. - This item is great used for automotive, marine and some outdoor applications. - The package contains 400 pieces solder seal wire joints, large quantity to meet your different needs. Package list: 400 x Solder Seal Wire Connectors