[Mute and prevent scratches] The fixed feet of the office chair glides are designed to match the height of the mounting feet, helping to prevent the pressure rod from damaging the floor. [Suitable for all kinds of floors] Fixed stationary castors provide good traction and maintain stability on smooth floor surfaces such as wood, tiles, and laminates. They offer greater traction than standard casters and help reduce friction, vibration, and noise. [Caster replacement] Replacement glides are compatible with various swivel chairs, including executive chairs, office chairs, gaming chairs, and other seating. Ideal for converting a rolling stool or office chair into a more stable, fixed-position chair. [Efficient installation] Replacement chair glides are easy to install and remove. No tools or screws required—simply pull out the old casters and press the new ones into place. Good traction for smooth movements: These glide caps maintain stability on smooth floors while providing enhanced grip compared to traditional casters. Easy to install: Installation is quick and simple with no additional tools needed. Improved stability: Helps prevent unwanted chair movement when standing up from a desk or table, offering added stability for users who need support. Protects carpet: Will not damage or chew up carpet like some standard casters. Ideal for unique environments: Suitable for use on moving or uneven surfaces such as boats and RVs, or where floors are not perfectly flat. Heavy-Duty & Super Quiet: Fixed casters provide reliable traction and stability on smooth surfaces. Includes 5 foam foot pads to further reduce friction, vibration, and noise. Color: Black Material: Nylon Size: Diameter 52mm, plunger 11x22mm, installation height 35mm Package Contents: 5 * Swivel chair fixed casters 5 * Foam pads Note: Light and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.