That’s a manual pipe threader die set kit
It’s the same type of tool as the red one you sent earlier, just the full kit version with all the parts in a case.
What it’s used for:
Cutting screw threads on the ends of metal pipes so you can join them with fittings. Used for water pipes, gas pipes, air lines, plumbing, etc.
What’s in the case:
1. Ratchet threader handle - the red tool on the left. This is what you turn
2. Die heads - the big silver round pieces. Each one has cutting dies inside
3. Interchangeable dies - different sizes for different pipe diameters. Looks like it covers from 1/2" up to 2"
4. Pipe cutter - the black wheel tool with the handle
5. Extension handles/bars - the long black rods for extra leverage
6. Red plastic case - Brand looks like INK-TECH