The Harry Potter Knight Bus Triple-Decker Building Blocks set by MOC Bricks features 419 interlocking pieces to create a detailed model of the iconic Knight Bus from the Harry Potter series. Made of durable plastic and packaged in a polybag, this set allows fans to build their own replica of the magical bus. The set name, "Builder Set," indicates that it is designed for construction and building, and the theme of "Cars" adds a fun and creative element to the play experience. With the character family of "Harry Potter," this product is sure to delight fans of the series.