Gray Brick Block

A Gray Brick Block is a gray-colored Brick Block appearing in World-e of Super Mario Advance 4: Super Mario Bros. 3, more specifically in the levels A Sky-High Adventure and Puzzling Pipe Maze. It is a solid block that can be destroyed only by using the Hammer Suit or the Tanooki Suit's statue mode. Unlike Brick Blocks and White Blocks, Gray Brick Blocks do not glisten.