Preciva Ferrule Crimper Plier Set, 0.25-6mm²/AWG23-10 Self-Adjustable Ratchet Bootlace Terminal Crimping Tool, Electrical Ferrules Wire Crimp Toolkit with 1900 Cable End Sleeve Connectors[Upgrade Six sided Crimping] Six sided serrate, this wire crimping tool kit makes the effect more firm, and looks closer to a circle. [Ratchet Labor saving Design] With ratcheting design, Preciva crimp set offers great crimping forces with low hand grip strength, power amplification by lever, achieving fatigue free operation especially when used repeatedly. [0. 25 to 6 mm Crimping Range] Suitable for insulated and uninsulated terminals bits from 0. 25