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Sockets before cleaning – May Contain Traces of Bolts

Sockets before cleaning

The #4 socket has visible corrosion (verdigris), while the #1 socket is almost pristine. The #2 and #3 sockets don’t look too bad apart from some dirt and deposits. Note that the #4 and #2 sockets seem to be made of brass or some other copper alloy while the #1 and #3 sockets seem to be made of steel.

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