The Plier Locking 170mm TC570170 C/W Shifting Spanner 150mm TC52006 is a tool set that includes two essential tools, both useful for various mechanical and repair tasks: Plier Locking 170mm TC570170: This is a locking plier (also known as a vise grip). The 170mm refers to the overall length of the pliers, which is approximately 6.7 inches. These pliers are designed to lock onto objects, allowing you to grip and hold them securely without continuous pressure. They are commonly used for tasks like gripping, bending, or turning, and are especially helpful in situations where a firm grip is necessary. Shifting Spanner 150mm TC52006: This is an adjustable spanner (also known as a monkey wrench). The 150mm indicates the spanner's length, which is about 6 inches. A shifting spanner has an adjustable jaw, allowing it to fit various sizes of nuts and bolts, providing versatility in different tasks. Together, this set offers a combination of versatile gripping and adjustable wrench capabilities, making it ideal for general maintenance, repairs, and mechanical work. The tools are useful for a wide range of applications, from loosening or tightening fasteners to holding components in place.