1.HEAVY DUTY DOUBLE BALL BEARINGS. The wheel is supported by heavy duty bearings on each side with precision steel balls and, this feature ensures the wheel with lower noise, less friction and more flexible rolling. 2.MADE OF NON-MARKING POLYURETHANE. Adopted non-marking polyurethane as its main material, this caster has a better performance of durability, shock absorption and protection to floors. 3.REINFORCED STEEL PLATE. Swivel plate of this leveling caster is specially designed to be thicker and stronger with our cold-rolled technology. When wheel rolling, the load capacity is 150 Lbs per caster and a total of 600 Lbs with set of 4. 4.MORE STABLE AND DOUBLE HEAVY DUTY. With the leveling foot down to the same height of wheel, the load capacity can be up to 1100 Lbs in total with set of 4 casters. And the leveling foot also serves leveler for uneven floors, which makes your furniture more stable. 5.CONVENIENT TO DO HOUSEWORK. When you need to do housework like sweeping, just lift up the leveling foot and lower down the wheel so that you can move your furniture easily. Product parameters Wheel diameter: 2 inch(50)MM Wheel width: 25MM Load bearing: 50kg Bottom plate specifications: 70x51MM Hole distance: 53x35MM : 6MM Installation height: 74MM (Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use) color: red Material: PVC/PP/PU Package Contents: 4 x caster wheels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.