The #6 Hook, Bar and Eye are available in Black or Nickel. The Bar is also referred to as Loop. It loops in the center. Sold by the gross. Note that the photo shows a #6 Eye - Rounded and a Flat Top version. Even though this is listed here, the wire gauge is a bit thinner. Please see the #4 Hooks-Eyes-Bars for pricing and availability.
Alas, The #6 Bars/Loops have been discontinued. There is a new #6 Pewter Hook & Bar. Photo not shown at this time. Will be happy to send you a sample upon request.
The measuring ribbon represents an approximation.