Channel lock pliers, also known as adjustable pliers or groove joint pliers, are versatile hand tools used for gripping and turning objects. They feature a unique design with adjustable jaws that can be set to various widths, allowing them to grasp items of different sizes. The pliers are commonly used in plumbing, automotive work, and general repairs. These pliers are named after the Channel Lock brand, which popularized the design. The long handles provide leverage, making it easier to apply force when gripping or turning. Their sturdy construction ensures durability, making them a reliable tool for both professionals and DIY enthusiasts.