251S 251SO.D. 2-1/2'Wall Thickness 11 GA.Wall Material SteelShaft Size 11/16" HexBall Bearing No. B251
254S 254SO.D. 2-1/2'Wall Thickness 14 GA.Wall Material SteelShaft Size 7/16" HexBall Bearing No. B254
254T 254TO.D. 2-1/2'Wall Thickness 14 GA.Wall Material SteelShaft Size 7/16" HexBall Bearing No. B254