BT-1 1/2 CS Ball Transfer Unit 1-1/2 Main Ball USA made BearingBT 1 1 2 CS Ball Transfer Unit 1 1 2" Main Ball Proudly made in the USA BT 1 1 2 CS Ball Transfer Unit, Main Ball is 1 1 2" Inch, 1 1 2" Main ball rotates on (90) 3 16" support balls. BT 1 1 2 CS is a heavy duty ball transfer unit, capable of supporting as many as 250 pounds (per unit). BT 1 1 2 CS Bearing Ball Transfer unit Ball Material: Carbon Steel Housing Material: Carbon Steel Load Capacity: 250 lbs Quantity: 1 Bearing Brand: Hudson Bearings