This item is the XT30U connector plug for battery. Made from premium material, it is sturdy and for long time use. It has high safety performance to help avoid the power to hurt people. With high current endurance performance, it could be used many times. Features - Color: Assorted Color. - Material: Nylon. - Size: 1.50X1.00X0.50cm/0.59X0.39X0.20in. - XT30U connector for lipo batteries, drones, airplanes, cars, vehicles. - There is no need to use heat shrink and the ridged edges on the end provide extra grip when pulling the male and female connectors apart. - XT30U connectors offer a tight fit, ensuring a solid connection for minimal resistance. - It requires a little force to clamp the end in place but please note that the end is hard to disassemble once it has been installed. - Adopted from material, it is and long lasting use. Package list: 10 pairs x power plugs 40 x heat shrink tubes