The Connex Wippermann 40ZB E-Bike Sprocket is a high-quality component designed specifically for electric bikes. With 40 teeth and a sleek black color, this sprocket is compatible with E-Chain Rings and comes with a chain included in the set. The 4-bolt design ensures easy installation and reliable performance, making it a great choice for upgrading or repairing your electric bicycle. Trust in the Connex brand for top-notch cycling components.