Features: 1) Convenient to move and circumvolve the work pieces 2) Can be used on the product line by combination or singly 3) Simple structure 4) Maintenance free 5) Strong carrying capacity 6) The table breadth and material can be customized 7) The pitch of ball can be decided according to the weight and figure of the work piece 8) Load capacity (used singly): 13kg, 15kg, 25kg, 40kg, 45kg, 50kg, 70kg, 90kg, 250kg