Our Wood Pirate Marbles Game, Moving From Ten to Ninety, Increases the Difficulty Step by Step, Exercises the Hand Fine Movement, Then Challenges the Balance Endurance, Lets the Ball Avoid the Trap, Pulls Both Ends to Move Slowly, Hand Eye Coordination. This Game Bracket is Easy to Install, Easy to Use, Which is Very Suitable for Promoting the Relationship Between Parents & Childrens. Complies with Cpsia. 13 Inch L x 5.7 Inch W x 17.12 Inch H. Minimum Quantity: 12.