Caster Load Rating Range: 300 to 999 lb. , Caster Product Group: Swivel Caster , Caster Temp. Range Available: Yes , Caster Type: Swivel , Caster Wheel Material: Nylon , Caster Wheel Shape: Standard , Core Material: Nylon , Frame Finish: Polished Zinc , Frame Material: Steel , Load Rating: 450 lb. , Mounting Bolt Dia.: 3/8" , Non-Marking: Yes , Plate Thickness: 1/8" , Raceway: Precision Ball , Replacement Wheel: Mfr. No. 065 NY1L , Temp. Range: -4 Degrees to 176 Degrees F , Wheel Bearings: Precision Ball , Wheel Color: White , Wheel Material: Nylon