●Universal use: robust single speed chain for use on BMX, fixie, beach cruiser or bicycles with hub gear ●Easy to assemble – the chain lock included in the set allows quick and easy opening and closing of the bicycle chain ●DURABLE STEEL ALLOY - Made from heat-treated steel for direct power transfer ●Highly adhesive grease – the chain is greased with highly adhesive lubricants as standard to ensure long-lasting smooth running ●Solution oriented customer service - Kartell is a German brand. If you have questions, then we will help you with competent answers!