Based on this product's specifications, here are some alternatives and similar models
Angle grinder rotor (wirnik) PRO YTMS17WS compatible with TMS12517
Summary description:
Replacement rotor (wirnik) for angle grinders, brand PRO, model YTMS17WS designed for use with TMS12517 series. This rotor is a core rotating component of the grinder’s motor that ensures transfer of torque to the grinding disc. Suitable for repair and maintenance of angle grinders to restore motor operation and extend tool service life.