Each has a carrying capacity of 4.4 lbs and a maximum of 6.6 lbs.
They are made of high quality nylon cups and stainless steel balls for light weight.
The ball transfer unit is an omni-directional weight-bearing spherical ball mounted in a restraining fixture with 360 universal drive bearings.
Rotating ball diameter: 1/3 inch, base top diameter: 4/7 inch, base bottom diameter: 1/2 inch
The ball transfer is suitable for electronics, hardware, machinery, chemical, food, forestry, mining, books, supermarkets, rubber and other industries.