The Unia Grudziadz PZ-1/A was a series of ploughs designed for small tractors.
There were two design versions adapted to specific tractors.
Pz-1 for the Zetor 25K and Pz-1A for the Ursus C-325/28.

Technical data
- Working width: 0,6 meter
- Price: $550
- Required tractor power: 20 hp

Configurations
- Frame design
- Additional small ploughs
- Setting up of cutting discs
- Wheel scrubber
- Color