Accessory is flexible bar system necessarily fittings. It can realized many function of flexible bar. Below is some accessory demonstration:

      Castor is one of important appendices of flexible bar. After increased the castor turn to be able to make the line stick realization mobility, can adapt the flexible system the turnover use need. According to the different situation, the castor has the plate and the insert type. Below is two kind of castor turn of demonstration:

       The plate-type castor is suitable for the heavy load situation, must coordinate two sets of cartridge together. It will be chosen fixed or moved castor according to the different situation.

       The insert castor suit for light load situation ,the bayonet fixes inside bar, not need other fitting, and convenience fix.