Kartal stainless steel cafeteria table

The cafe table you are reviewing has a 70×70 werzalit table top and its height from the ground is 75 cm. The intermediate chrome-plated pipe used on the base is 60 mm in diameter and there is a 38 cm lower weighted stainless base. What does a weighted non-loaded base mean? There is a 5 mm thick sheet metal plate under the stainless plate and there are 4 screw system adjustable plastic shoes under this lower construction to eliminate floor heights. This shoe is used to protect your table from water during cleaning and to eliminate height differences on the ground.