EASY TO USE - - This practical crimping plier set can be used as a crimping tool for cable terminals, ferrules, and connectors. The jaws can be easily installed/removed with screws and a screwdriver. QUALITY MATERIAL - - Jaws made of high-quality hardened steel, these crimping pliers are very strong and durable. Professional wire crimping tool with 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 ferrules; A10 (For 1.5 - 6 mm²): For non-insulated terminals; A30J (For 0.5 - 6.0 mm²): For insulated terminals; A35WF (For 10 - 35 mm²): For non-insulated ferrules. ERGONOMIC HANDLE - - Thanks to the handle's grip position, the lightweight and compact structure, and the handle's design, a perfect crimping effect is guaranteed. STORAGE BAG - - Storage bag with outer pocket included to neatly organize and store the tools after use.