Capacity up to 1,500 pounds per caster only if infrequently moved in a manual application where there is no abuse. Benefits include easier swiveling, reduced swivel vibration, and longer trouble free performance. Stainless Model SS-G15 stem casters are recommended only for manually moved applications. Threaded Stem Casters should NOT be used as a โLeveling Deviceโ! Capacity ratings are based on the weight being directly on the top of the swivel bearing, not somewhere above it on the threaded stem.