Repairing a Bosch 11232EVS rotary hammer drill. The previous owner was using this rotary hammer with a chisel bit in a crawl space to remove part of the foundation when it started cutting out. This thing was filthy, inside and out. See the links below for the parts and tools I used:
Brushes:
https://amzn.to/3orr0I1 (affiliate*)
1/2" Spline Hammer Drill Bit:
https://amzn.to/3pzgm3q (affiliate*)
*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!