0-1 Dice Block
From the Super Mario Wiki
0-1 Dice Blocks are a type of Special Dice Block appearing in Mario Party 9. They are blue colored dice blocks that, when rolled, allow the player to only roll a zero or one. 0-1 Dice Blocks can be optioned by landing on a Dice Space, from a Toad House or by landing on a Spin Space. The 0-1 Dice can be useful if Mini Ztars are ahead or if the Captain wanted to land on the space right next to the vehicle.
Rolling a 0 does not trigger the occupied space again; instead, it simply ends the Captain's turn.