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The Armour Ring™ is an incredibly simple yet effective means of masking standard hexagon fasteners secure. Armour ring caps are simply hammer fitted over any full height* British or DIN standard hexagon nut or bolt. They provide a clean, smooth finish with no sharp edges, making it perfect for schools and playgrounds. The Armour Ring™ is approved by the Home Office.
*Armour Rings will not work on half nuts or type T thin Nyloc nuts.
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