435PCS Sports Car Building Blocks,Speed Champions Cars Blocks Building Sets Toys,City Racing Cars DIY Building Bricks for Kids and Adults Product information: Type of toy: Block Material: Plastic/plastic Number of particles: 435PCS Plastic building blocks type: Small particles Product Model: g t r Applicable age: Youth (7-100years old). Note: This product is a small particle part, usually only 0.5-4cm in size. Small particles may cause asphyxia, and it is not suitable for children aged 0-3 years.