└ Tools, tools
      └ Power Tools
         └ Air Tools
            ├ air screwdriver
            ├ riveter
            ├ air duster
            ├ Air chuck
            ├ Nails, staples, nails
            ├ Fittings, sockets, cocks
            ├ nozzle
            ├ Air hoses and reels
            ├ Other air tools
            └ air hammer
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