Entertaining and EducationalDeveloping kid's hands-on ability and enhanceing parent-child interaction and emotional exchange. Recommended for children over 6+ ages girls and boys. Compatible with all major brandsPerfectly work with all major brands building bricks for endless bulding fun Manufacturered by EAHUMM. SaftyHighest quality ABS plastic toxin free & harmless to give parents a peace of mind IncludeAccording to the item number in the upper left corner of the manual to find the corresponding block pack. Each mini set comes with an individual instruction manual and stickers. 12 carsContains sets of 12 building blocks cars.The joints can swing and the cars can be pushed to run.