Prosource JC-B11-PS Swivel Casters, 1-5/8"Highlights: Size : 1 5 8" 50 Lb load capacity White Wheels Plate mounted Used to move light to medium weight furniture with ease Hard plastic wheels Zinc plated finish Recommended surfaces: asphalt, concrete, wood planking, carpet Easy to assemble Use on any flat surface, commercial or residential WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other