this post was submitted on 23 Mar 2025
        
      
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They're mixing up their metric and imperial sizes. These are from Forgefix, which are a British company. Many British people aged about 55 and over tend to still use imperial sizes for some things.
So it's not 6-8mm, but "the size of wall plug for 6-8 gauge screws, which are 3.5mm - 4mm screws in metric.
Strangely, if you buy a multipack of masonry bits, they give you 3, 4, 6, 8, 10mm bits. Some brands of wall plugs tend to use 5.5mm, 6.5mm, 7mm. It is a conspiracy!
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