Specifications:
*Capacity(Max.): 30kg/66lb
*Ball Diameter: 25mm / 1-inch
*Mount Hole Dia.: 5mm/0.2-inch
*Mount Hole Distance: 55mm/2.17-inch
*Material: Carbon Steel, Nylon
*Dimension: 70 x 50 x 30mm / 2.76-inch x 1.97-inch x 1.18-inch (L*W*H)
Note: These Ball Transfer Units are used for transporting flat, smooth objects such as trays. It is not suitable for transporting stuff that has uneven or soft bottom surfaces such as cloth wrapping. It can not be used as a swivel caster to move on the floor.