The Shimano E6090 E-bike SIL-TEC 10 Speed Chain is designed specifically for E-Bikes using a single front chainring & a 10 speed rear cassette. Featuring Sil-Tec technology for smoother pedalling with less maintenance & a longer life in all weather conditions. Sil Tec is an advanced plating process that improves system performance through the use of imbedded fluorine molecules giving it ultra low friction & better water & dirt resistance.