THE KIDS REALLY ENJOYED THESE. PERADIX IS REALLY GOOD AT COMING OUT WITH GOOD QUALITY INTERESTRING TOYS AND THIS IS ONE OF THEM. IT PROVIDES SOMETHING FUN TO LEARN THE DIFFERENT PARTS OF EACH VEHICLE AND HOW TO PUT THEM TOGETHER. IT ALSO PLAYS A LIGHT TUNE THAT ESPECIALLY MY GRANDDAUGHTER LIKED. SHE KEPT SHAKING THEM TO MAKE THEM SING AGAIN! OVERALL THEY HAVE MULTI LEARNING AND FUN FEATURES. I HIGHLY RECOMMEND THIS TOY AND WELL DONE TO THE SELLER!