Based on this product's specifications, here are some alternatives and similar models
Impact wrench brush holder PRO TKU1000 brush-retainer accessory for impact wrench
Summary description:
Replacement brush holder accessory compatible with PRO impact wrench model TKU1000. Serves as a brush-retainer unit for the tool's motor, holding carbon brushes in position to ensure electrical contact and reliable operation. Used when servicing or replacing worn brush assemblies to restore motor performance and prolong tool life.