The Problem Solvers Centerlock Adaptor for 6-bolt Rotors TP110 is a black adapter designed to allow for the installation of 6-bolt rotors on bicycles equipped with centerlock hubs. The set includes a lockring, making it easy to secure the adapter in place. This product is specifically designed by the brand Problem Solvers to be compatible with Rotor brand rotors, providing a reliable and secure attachment for improved braking performance.