An important cycling part the missinglink 11 from kmc allows you to fit and remove a chain with only an opening tool required the non reusable speed chain has a pin length of 55mm and is designed for use with kmc and campagnolo 11 speed chains rk key features kmc missinglink 11 speed chain in silver for use with kmc and campagnolo 11 speed chains pin length 55mm opening tool required not included not reusable