Deck divider

A Deck divider is a plastic insert players can use to separate and distinguish between their Main Deck, Side Deck, and Extra Deck. Over time, Konami has released several of these.

TCG Deck Dividers

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  HERO Strike Elite: 2 double-sided Deck dividers, consisting of "Contrast HERO Chaos" & "Elemental HERO Avian" on one, and "Elemental HERO Shadow Mist" & "Elemental HERO Voltic" on the other

OCG Japanese Deck Dividers

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  "Charmer" monsters (double-sided)
  Contained in the 70-pack "Charmer" card sleeves products.

• 

  "Charmer" monsters (double-sided)
  (opposite side)

OCG Asian "Overseas Edition" Deck Dividers

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  Anime Festival Asia (AFA) 2014: "Ritual Beast Ulti-Apelio"
  Awarded to people who fill out a survey from room 300 at the event, and delivering it to booth A140 on Level 4 while presenting their Duelist ID card.

• 

  AFA 2014: Singapore Official Shop List
  (opposite side)

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  Yu-Gi-Oh! Open Tournament Singapore (YOTSG) 2015: "Clear Wing Synchro Dragon"
  Awarded to YOTSG 2015 participants who pre-registered for the event, upon submission of their Decklists.

• 

  YOTSG 2015: Yugo
  (opposite side)