Spanner set includes seven spanners with metric sizes ranging from 21mm to 36mm. This range covers a wide array of common metric fasteners, providing versatility for different applications., Sidchrome is known for its high-quality tools, and this spanner set is no exception; spanners are constructed from durable materials to withstand heavy use and provide reliable performance over time., Spanners are precision-engineered to ensure a snug fit on fasteners, minimizing the risk of slipping or rounding; design allows for efficient and accurate fastening, enhancing productivity.