The spanner, a fundamental tool in the realm of mechanics and construction, holds a pivotal role in fastening and loosening nuts and bolts with precision. Also known as a wrench in some regions, the spanner comes in various types and sizes to accommodate different tasks and bolt sizes. Its design typically features a handle and jaws or a socket that engages with the fastener, allowing users to apply torque and manipulate the tightness of connections. From the simplicity of an adjustable spanner to the specialized forms like open-end, box-end, or socket wrenches, this versatile tool is indispensable in automotive repair, household maintenance, and industrial settings. The spanner's adaptability and effectiveness make it an essential component in the toolkit of professionals and DIY enthusiasts alike, ensuring the successful assembly and maintenance of structures and machinery.