It's fun because you can actually make it move! Construction site play just got even more fun! This is a **crane block set (LEGO Duplo compatible)**. The crane's arm moves, and you can lift blocks with the hook. Kids love it because they can actually play "lift and lower," making it a big hit with children who love working vehicles and construction sites ♡♡♡ ✔ You can lift blocks with the crane ✔ Easy for young children to play with ✔ Perfect for construction site play and imaginative play You can play with your existing LEGO Duplo compatible blocks.