That’s an INGCO 1400W Angle Polisher - "INDUSTRIAL" line. Yellow/black box.
What it’s used for:
Buffing, polishing, and finishing flat surfaces. It spins a big wool pad or foam pad at variable speed.
Main jobs:
1. Car detailing - Remove swirl marks, oxidation, and scratches from car paint. Apply wax/sealant with foam pads. The wool pad in the pic is for cutting/compounding.
2. Marble/granite - Polish stone countertops, floors, tiles to a high gloss.
3. Wood + furniture - Buff finishes on wood tables, doors, cabinets.
4. Metal - Polish stainless steel, aluminum, chrome. Think railings, tanks, fittings.