The blade is a part of the Duel Disk where the cards are placed during a duel. It usually contains 11 slots, 5 for Monster Cards, 5 for Spell and Trap Cards, and a foldable slot for Field Spell Cards. However, the Duel Disks from Yu-Gi-Oh! ARC-V also include Pendulum Zones. These features can also depend on the model in question.