Rolling Toy Block

From the Super Mario Wiki

The Rolling Toy Block is an item found in the game Wario Land 4. The Rolling Toy Block is a mobile platform type item that Wario can punch along to an area where coins or gems are that he can't reach. The Rolling Toy Block is a circular shaped block that is red with stripes. The only stage that Rolling Toy Blocks can be found on is Toy Block Tower in the Topaz Passage.