RUPES Bigfoot Carbon Brushes for LH16ES LH18ENS LH19E LHR21ES LHR15ES LHR12E LHR75E Polishers and many more.

Also:
LHR21 MK III
LHR15 MK III

Highest Quality Replacement RUPES Carbon Brushes Part. 47.105 these brush fit majority of Rupes Machine.