Wheel diameter of about 6cm,

Floor thickness of about 3mm,

Length of about 25cm,

Width of about 14.8cm
Double structure: easy to expand

Car size and size:

 

The width of the trolley is 155MM outside the two wheels

 

Car length of 260MM

 
Car chassis without tire size is 26cmx15.5cm
Car chassis with tire size is 26cmx17.5cm