Samyo Portable Professtional Self-Adjusting Hand Crimping Tool Ratcheting Square Ferrule Crimper Crimping Pliers for 0.25-6.0mm2 Cable End-sleeves (AWG23-10) RBH04 Self-adjusting and four-mandrel design. Satisfy different sizes of casing pressure to the terminal. Easy to use for cable end-sleeves, Makes square-shaped crimps. Self locking and releasing mechanic unit, ensure high of crimping quality when crimping repeatedly. Capacity:0.25-6.0mm2. AWG:23-10.