This 4mm x 5mm variant is the smallest in the range, ideal for precision engineering work, electronics assembly, and intricate mechanical applications where compact fasteners are used. The combination of 4mm and 5mm openings makes this spanner particularly useful for small-scale machinery maintenance and delicate repair tasks. Despite its compact size, it maintains the same professional-grade construction as larger variants. Features and Benefits: • Chrome vanadium steel hardened, tempered
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