(1) election size: the greater the diameter of the caster, the more the effort to promote, the better the ability to break.

(2) to see load-bearing: the same diameter of the casters, the general manufacturers will produce several series for different load-bearing, such as light, medium, heavy, etc., is to make the wheels have different width and bracket have different thickness or change the material The

(3) wheel material: This is very important, generally PU, TPR, PP, rubber, nylon, etc., as for the temperature, surface hardness, ground environment