Features: Safety - Nicely safe wood made, smooth wooden blocks with perfectly polished edges. Multifunction - Not only can play stacking game, but also good math game as it printed numbers 1-51. Works with both upper extremities, hands, fingers as well as the brain. Perfect Family Game - Adults and children both will enjoy playing this game together. Dominoes Game - Kids can play the blocks as dominoes game. Great and super fun toy for your kids to play, push one of them, it will have a chain effect. Interaction - Promote friendship and communication between players. Specification: Item Name: Wooden Building Block Set Material: beech Quantity: 51pcs Package Information: Package size: 28.5 * 8 * 8cm / 11.2 * 3.1 * 3.1in Package weight: 988g / 2.2lb General box package There may be some deviation because of manual measurement. Notes: Children should play with it under adult supervision. Don t let children put the toy into mouth in case they will swallow the small parts of the toy. Package List: 51 * Building Block 4 * Dice.