Total-Locking Bolt-In Stem Caster with Round Stems for Scaffolding Swivel Caster with Total Lock 500 lb Load Rating 300 to 999 lb 8 in Wheel Dia 2 in Wheel Width Rubber Wheel/Tread Material 9 in Mounting Height Roller 1-3/8 in x 3-7/8 in Caster Stem Size Round Steel Caster Frame Material Zinc Plated Frame Finish No Non-Marking 1 Number of Wheels