Swivel Plate Caster, Load Rating 900 lb., Wheel Dia. 8 In., Wheel Width 2 In., Overall Height 9-3/4 In., Inside Bolt Hole Spacing 2-7/16 x 4-15/16 In., Outside Bolt Hole Spacing 3-3/8 x 5-1/4 In., Wheel Material Polyurethane, Wheel Color Blue, Core Material Aluminum, Replacement Wheel Mfr. W-822-AYB-1/2, Raceway Precision Ball, Wheel Bearings Sealed Precision BallPlate Size 4-1/2 x 6-1/2 In., Durometer 80 Shore A, Core Color Silver, Mounting Bolt Dia. 1/2 In., Frame Material Forged Steel
Polyurethane Wheel Casters on Aluminum Core- Swivel casters feature double-ball raceway.