This is a hydraulic crimping tool set, likely a YQK-300 model used for securing cable lugs onto heavy-duty wires.
Crimping Range: The tool includes dies for a range of wire sizes, typically from \(16\text{mm}^2\) up to \(300\text{mm}^2\).
Operating Mechanism: It utilizes a manual hydraulic system to generate pressure for creating secure connections.
Components: The kit comes in a yellow plastic storage case and includes various crimping dies and replacement seals.