MATERIAL: For strength, wear resistance, and longevity, open-ended spanners are made of high-strength steel and chrome vanadium steel. They also have a highly polished chrome surface that resists corrosion and rust. SPECIFICATIONS: These are metric-sized wrenches. There are numerous sizes from which to pick. You can select the appropriate size based on your project. For simpler size identification, wrench sizes are stamped on both sides of the handle.SPECIFICATIONS: These are metric-sized wrenches. There are numerous sizes from which to pick. You can select the appropriate size based on your project. For simpler size identification, wrench sizes are stamped on both sides of the handle. DESIGN: Long-lasting protection with a mirror polish chrome finish that is simple to wipe clean of oil or dirt. Improved comfort is provided by the oval beam. Each wrench is rigorously examined for hardness, torque, and surface in accordance with industry standards, and it should last a lifetime with regular usage. USAGE: The ideal all-purpose spanner, which works well for usage in the automotive, industrial, domestic, and hobby markets, fits all typical small hex screws and nuts. The tiny size is great for usage in confined, difficult-to-reach areas. SIZE: Combination Spanner Chrome Mechanics Workshop Tools, 20mm x 22mm, open-ended., Weight: 0.5070632026 pounds, Manufacturer: Dapetz