General description This set includes six long Whitworth combination spanners designed for professional use. Technical specifications Material: Chrome vanadium steel Finish: Chrome plated for corrosion resistance Sizes included: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" Features: Hardened, tempered, polished bi-hexagon ring, 15-degree jaw offset Compatibility and accessories Compatible with standard Whitworth fittings Suitable for various mechanical and maintenance tasks Installation No installation required; ready to use out of the box Usage Use the appropriate size spanner for the fastener Apply force evenly to avoid damaging the tool or fastener Use in mechanical, automotive, or home repair applications