Cheap price, good detail
These Mario Karts remind me of a blend between Matchbox/Micro Machines - you pull them back and they'll speed along and go around an imaginary corner! Though rather simplistic in close view there's a decent amount of detail on them - plain yet effective. I was lucky enough to get both Mario & Luigi on my first try. They are roughly 4 cm high (no doubt taller for the bigger characters) and 5 cm long.

For the bargain price its well worth it! I can't find any faults worth noting about