The Wheel Hub Is Made of High-Strength Plastic, And the Tire Is Made of Black Rubber.
The Tire Diameter Is About 65mm, The Inner Diameter Is About 51.8mm, The Width Is About 27mm,
The Outer Diameter of the Inner Frame Shaft Is Straight About 13.8, The Width of the Axle Hole Is About 3.66mm, And the Length of the Axle Hole Is About 5.3mm