Highlight description:1. [Soft Rubber] Our furnishings casters use soft rubber casters to guarantee no scratches or marks on the surface and easy to move.2. [Mounting Holes] The five horizontal mounting holes of the caster are used to repair the instruction manual rail and aren't clean to deform. Increase the attitude to make the mounting plate extra stable.Detailed description:SpecificationProduct name: Caster WheelsScope of application: business casters, electrical casters, furnishings casters/office furniture/home/hardware14pcs 2inch:Material: PU+MetalColour: Black + OrangeSize: As ShownDiameter: 50mmMounting height: 73mmBearing: double bearingWheel width: 24mm16pcs 0.5inchMaterial: Polypropylene + Synthetic RubberWheel diameter: 12mm Wheel width: 9mm Load bearing: 8kg/17.6lb Installation height: 13mm Base plate size: 12.5×28mm Installation hole diameter: 20mm Installation hole: 4.2mm 4pcs:Product Size: 32mm (Diameter)Quantity: 4 PiecesParts List:14pcs 2inch:4 x 2 inch Caster Wheels 1 x Screwdriver 16 x Screw Nuts 16 x Screw Spacer16pcs 0.5inch16×Wheels 32×Screws 1×Screwdriver4pcs:4×Furniture Castors 1×Screwdriver 2×Screws Pack (20 Screws)Notes:1. Due to the difference between diverse monitors, the image might not reflect the particular coloration of the item.2. Please enable slight size distinction due to diverse manual measurement. Thank you on your understanding.