The Sram Powerlock makes maintaining your chain easier than ever. With this handy lock, you can easily and quickly install your chain on your bike. Ideal for a new (hot-waxed) chain and after cleaning and hot waxing your chain. It is an original Sram Powerlock that fits all Sram 12-speed chains. A Powerlock set is suitable for installing one bicycle chain.
Sram recommends using a Powerlock only once.