"Master Grade" refers to a specific line of model kits produced by Bandai, primarily focused on Gundam series mobile suits. These kits are known for their high level of detail, articulation, and complexity, making them suitable for intermediate to advanced model builders. Master Grade kits typically feature a 1/100 scale, allowing for a more substantial and intricate build compared to simpler models. Each Master Grade kit usually includes a variety of accessories, such as weapons and alternate parts, enhancing the overall display and playability. Additionally, they often come with a detailed instruction manual and sometimes even a small booklet about the Gundam series, providing context and background for enthusiasts.