Features:OOTDTY Crafted from rubber and Iron materials, wear resistant and durability. Effectively minimize noise and frictions, and keep indoor quietness and comfort.Strong load bearing capacity, secure and Enduring. You can smoothly and freely function furniture.Seal bearing, low frictional resistance, highly temperature resistance, extremely speed, low noise, dustproof, antistuck.The heavy duty rubber casters wheel can rotates 360 degrees very Smooth.It can extensively used in diversified furniture, corresponding to sofas, bed, tables, cabinets.Specifications:Materials: Rubber and IronStyles: Universals Wheel/Universals Wheel with Brake/2PCS Universals Wheel and 2PCS Universals Wheel with BrakesWheel Thickness: about 1 inchClamp Plate Inner Width: about 16mm/0.63inchOther Size Are Shown in the PicturePackage Includes:4Pcs Universals Wheel/4Pcs Universals Wheel with Brake/2PCS Universals Wheel and 2PCS Universals Wheel with BrakesNote:Please enable 1-2cm mistakes thanks to handbook measurement, make sure that you do not intellect before you order. Due to difference between various monitors, the picture won't replicate the actual coloration of the item.