The KSH-20 is a specialized spring-loaded ball transfer unit (or omni-directional caster) primarily used in material handling, assembly lines, and machine tool worktables. It allows heavy, flat-bottomed objects to be moved, rotated, and positioned smoothly in any direction with minimal effort. Model KSH-20 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description The KSH-20 is typically not a conventional rotary bearing, but rather a spring-loaded ball transfer