EASY TO USE - This practical crimping tool set can be used to crimp cable lugs, female connectors and couplings. The jaws can be easily assembled/removed with screws and a screwdriver. QUALITY MATERIAL - Made of high-quality hardened steel, this crimping tool is very strong and durable. Professional wire crimping tool with a self-adjusting ratchet mechanism for easy use. 5 PAIRS OF INTERCHANGEABLE INSERTS - A03B (For 1.5 - 6 mm²): For non-insulated flat connectors; A26TW (For 2*0.5 - 6 mm²): For insulated and non-insulated female connectors; A10 (For 1.5 - 6 mm²): For non-insulated connectors; A30J (For 0.5 - 6.0 mm²): For insulated connectors; A35WF (For 10-35 mm²): For non-insulated female connectors. ERGONOMIC GRIP - Thanks to the grip position, the light and compact structure, as well as the handle design, ensure a perfect crimping effect. STORAGE CASE - A storage case with an external pocket is included to neatly organize and store the tools after use.