A great value set of 4 with the same color; A flat dolly that is convenient for moving heavy objects; Great for indoors, closets, verandas, etc.; Design and color that does not feel discomfort even when used indoors; Elastomer casters that wont scratch the floor; Compact and lightweight design; Easy to connect vertically and horizontally depending on use; Stacking function for multiple cars; 360 degree rotation; Made in Japan; Safe and safe and safe load: 1760 lbs (80 kg).