Allpoints 264707 Stem Caster Set (4), 3"Std Duty, 1" Exp Stem

1" expanding stem caster set includes (2) 3" stem casters with brake, (2) 3" stem casters without brake, and caster screws. 1000 lbs load capacity and 4" load height. fits most shelving units with 1" round or square tubing.