Caster, Stem With Brake 5 x 1-1/4 S, Material: Plastic Hub | Polyurethane Wheel, Width: 3/8" Axle Bolt | 1 1/4" Wheel, Caster Brake: Y, Load Capacity: 1000 Lb Per Set Of 4, Load Height: 6 1/8", Wheel Diameter: 5", Outer Diameter: 1 1/8" Tubing, Caster Type: Stem | Swivel,