Made of quality materials, these heat shrink wire connectors have a and excellent insulation effect, which can serve you well. You don't need to use the to crimp the item when using the solder seal wire connectors, save one step to do it. Convenient and practical, bring convenience to your work. Features -Color:Transparent -Material: PE, tin. -Size: About 4.00X0.70X0.70cm/1.57X0.28X0.28in. - Time saver. Solderless, , all you need is just a heat tool to finish the joint, much faster and easier than the old way. - Better waterproof and seal performance. There is waterproof design in each butt connector, which help it hold up better to . - Use exclusive material in the butt connectors to shrink tubing melting before solder ring. - Meet the standard required, which is the most standardized and safest way for you to repair or modify your car. - Good workmanship details, not easy to rust, waterproof, insulated, sturdy and , can serve you well. Package list: Solder Seal Wire Connectors