This is a Pneumatic/Air Carbon Scraper or Air Scaling Hammer
You have 2 photos showing the same tool - black curved handle with red hammer head and air quick-connect at the top.
What is it used for?
This is an air-powered descaling/chipping tool used to remove rust, scale, paint, and carbon deposits.
Main Uses:
1. Marine/Ship Maintenance - Clean rust and marine growth from ship hulls, tanks, decks
2. Automotive - Remove carbon buildup from engine blocks, exhaust manifolds, brake dust
3. Welding/Fabrication - Chip slag off welds, remove rust before painting
4. Industrial Cleaning - Descale boilers, heat exchangers, concrete, and metal surfaces
5. Construction - Light demolition, removing old paint/coating