1 Pack, 3 in Diameter, Blue Diamond TPU Wheel Caster Features a foot activated total lock break that simultaneously stops the caster wheel rotation and swivel Double ball bearing swivel, black powder coated rig, 258 in x 334 in plate mount and 225 lb load capacity Offers soft and resilient nonmarking blue TPU wheels for quiet and smooth rolling over most surfaces Roller bearing sealed hubs for long term and trouble free performance