The JBM Tools 3pc Adjustable Plier Set features integrated quick-adjustment knobs for fast and accurate adjustments, enabling you to work efficiently. The pliers are designed with V-shaped jaws that provide an all-purpose grip, smoothly adjusting to various material shapes such as flat, round, square, and hexagonal. The high-frequency hardened jaws enhance the durability of the teeth and jaws, making them tougher and longer-lasting than standard hardened pliers. Made from chrome vanadium (Cr-V) alloy steel, these pliers offer excellent tool life and durability. The set includes three pliers: 180mm, 240mm, and 300mm in size.