Enhance the longevity of your office chair with our premium chair wheel stopper protective covers. These covers are suitable for preventing scratches and damage to your hardwood floors. Simply slide the covers over the wheels of your rolling chair to create a protective barrier. Ideal for home offices, these covers make sure smooth and quiet movement while safeguarding your flooring. Features -Color:Black -Material:Plastic -Size:3.30X1.50X1.50cm/1.30X0.59X0.59in -Inner diameter: 8mm -Outer diameter: 16mm -Fit for 8*38 rods - material: made from pp plastic, these roller chair foot covers are designed to withstand daily wear and tear, ensuring use -Universal fit: these mounting sockets for chair legs are compatible with most office chairs and stools, making them a versatile addition to your furniture accessories -Easy installation: the stem inserts sleeves are designed for quick and easy installation, allowing you to replace or upgrade your chair casters without any hassle -Floor protection: the chair glides protective cover helps to prevent scratches and damage to your floors, keeping them in pristine condition -Ample supply: these chair caster covers provide ample supply for multiple chairs or future replacements Package list: 20 x Stool Swivel Caster Covers