[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 damage to the floor from the air pressure rod. [Suitable for all kinds of floors] These stationary glides offer excellent traction and stability on smooth floor surfaces such as wood, tiles, and laminates. They provide better grip than standard casters while reducing friction, vibration, and noise. [Excellent caster replacement] These replacement glides are compatible with various swivel chairs, including executive chairs, office chairs, gaming chairs, and tables or chairs that require a stable, non-rolling base. Ideal for converting a rolling stool or office chair into a fixed, stable position. [Efficient installation] The chair glides are easy to install and remove without tools or screws. Simply pull out the old casters and press the new glides into place. Good traction for smooth movements: These glides maintain stability on smooth floors and offer improved grip compared to traditional casters. Easy to install: No tools required. Helps prevent unwanted chair movement when standing up from a desk or table, providing added stability for users who need support when sitting or standing. Protect your carpet: Designed to glide smoothly without damaging or fraying carpet surfaces. Perfect for unique environments: Suitable for use on moving surfaces such as boats and RVs, as well as on slightly uneven floors. Heavy-duty & super quiet: These fixed glides provide strong traction and stability on smooth surfaces, with reduced noise and enhanced durability. Includes 5 foam pads to further minimize friction, vibration, and noise. Color: Black Material: Nylon Size: Base diameter 52mm, plunger 11x22mm, installation height 35mm Package Contents: 5 x Swivel chair fixed casters, 5 x 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.