This Plate Caster 2-Pack is a heavy-duty solution for moving heavy objects. With a load capacity of 700 pounds per caster and a total capacity of 1400 pounds, these casters have four times the weight capacity of others on the market. The polyurethane mold on steel construction ensures durability and longevity, while the roller bearing with hardened raceway provides extra strength. These green swivel casters can rotate 360 degrees and come with brakes for added safety. The top plate measures 4"x4-1/2" and has a mounting height of 5-5/8". This product also comes with a 90-day hassle-free return policy and a 100% satisfaction guarantee.