Friction Construction Trucks

These are cheaply made and undoubtedly won't last long. They seem flimsy. I guess it's a good thing???? that there are 2 of each vehicle since the seem like they will break quickly.I thought they would be fun to pack for a plane trip for my little guy, but I won't be bringing them. The arms on the diggers won't bend down enough to pick anything up which would be endlessly frustrating for him.