Great tools for spare time: When the weather's not suitable for out going, it sounds like a nice idea to play with these pucks on an air hockey table. In the course of the game, not just your reaction speed can be exercised, the coordination and cooperation between friends can also be greatly enhanced. Stop looking for replacements: The round puck, made of ABS material, is wear-resistant and smooth-surfaced, which can slide on the table with ease. Enough quantity and durability save your time spent on looking around for next replacements. Specifications: Size: 3.2 inch in diameter Material: ABS plastic Color: blue, yellow, purple, orange Package content: 8 x Air hockey pucks replacement Notice: Choking hazard may exist, please keep the air hockey pucks away from children under 3 years old. People under 14 are required adult supervision when using the product. Due to hand-made product, the slipknot may easy to loose, if that happens, just tie a simple knot.