FSBT-5/8 CS/SS Ball Transfer Unit 5/8 Main Ball USA made BearingFSBT 5 8 CS SS Ball Transfer Unit 5 8" Main Ball Proudly made in the USA FSBT 5 8 CS SS Ball Transfer Unit, the main ball is 5 8" Inch, FSBT 5 8 CS SS Can be recessed into the surface of the application forming a smooth and multi directional rolling surface, Unit available with carbon steel balls or stainless steel balls to provide corrosion resistance. FSBT 5 8 CS SS Ball Bearing Ball Transfer unit Ball Material: Stainless Housing Material: Carbon