This is the Atlas Copco adaptor part number 3000582502, Crowder SKU AC-3000582502. It joins the hose to the machine. Connection hardware gets dragged, dropped, and cross-threaded, so it is a common replacement.
It is called out in the parts diagram for the BBD 12T-01 TS-01 Rock Drill and BBD 15E ET Rock Drill.
Use the full diagram library to work through the rest of the assembly, or the Atlas Copco catalog if you are pricing a replacement machine. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3000582502
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3000582502
- Listed on breakdowns for: BBD 12T-01 TS-01 Rock Drill, BBD 15E ET Rock Drill

