脚轮具有锁定方向、释放、全方位刹车三个档位的功能。通过有机连接，可实现多支脚轮的同步操作。

全封闭的结构使脚轮具备防缠绕功能。
专利结构设计。钢制框架、镀锌处理，支架外部使用ABS包罩装饰。轮圈材质聚氨酯（TPU）或人造橡胶（TPE）可选。
采用2套密封滚珠轴承。

The caster has the function of directional locking, releasing and 360°total-braking. Synchronous operation of multiple casters can be realized through effective connection.

Enclosed structure prevents the casters from being winding.
Patent constructional design. Steel frame structure, Galvanized treatment. ABS material used on the bracket outside. The tyre material for TPU or TPE is available.
Two sets of sealed ball bearings are used.