The product is a set of five 4mm Allen keys in a hexagon shape, designed by the brand RS. These non-ratcheting keys are made of metal and are non-magnetic, making them suitable for various DIY and workshop projects. The keys come in a custom bundle, with the option to choose from different sizes using the drop-down box. Manufactured in the United Kingdom, these black-coloured Allen keys are perfect for fastening and loosening nuts and bolts in metric measurements.
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