Our casters use premium polyurethane (PU) material with a specially formulated soft tread that absorbs vibration and reduces rolling noise by up to 80%. Unlike hard plastic or metal wheels that create a loud clatter on hard floors, the PU compound delivers a near-silent glide, making them ideal for offices, libraries, and quiet home environments.

Each caster is rated for50 kg (110 lbs). With a set of 5 casters, the total recommended load capacity is approximately200–220 kg (440–485 lbs)for smooth and safe rolling. The core is reinforced with a precision608 steel bearingto ensure durability even under heavy loads.

No. The soft PU tread is designed to befloor-friendlyand non-marking. It provides gentle cushioning that protects hardwood, laminate, tile, and even delicate stone surfaces from scratches and scuffs. We recommend keeping the wheels clean from debris to maintain their protective performance.

Yes, they perform well on both low-pile and medium-pile carpets. The smooth rolling surface and swivel design allow easy maneuverability, while the soft tread prevents snagging or indentations. For thicker carpets, the caster's diameter and wide contact area still provide stable movement.

No tools required. These casters feature aplug-in stemdesign – simply insert the stem into the chair base socket and press down firmly until you hear a click. The installation takes just a few seconds per caster and works with most standard office chair bases (stem diameter: 11mm x 22mm / 7/16" x 7/8").

They come with auniversal 11mm x 22mm (7/16" x 7/8")friction stem, which is compatible with the vast majority of office chairs, gaming chairs, and stool bases on the market. If your chair uses a different stem type, please check your existing caster's dimensions before purchasing.

Absolutely. The caster features adouble-ball racewaydesign inside the swivel mechanism, which ensures 360° smooth, friction-free rotation. Whether you're moving forward, backward, or sideways, the caster responds instantly without jerking or sticking.

Yes, they feature acrystal-clear polyurethaneconstruction with a sleek, modern aesthetic. The transparency allows the wheels to blend seamlessly with any furniture style – from minimalist and contemporary to classic wood tones – while maintaining full durability and performance.

With normal daily use, these casters are built for long-term reliability. The combination of wear-resistant PU tread, shielded steel bearing, and robust housing ensures a lifespan of3–5 yearsunder standard office conditions. Regular cleaning (removing hair and dust from the axle) can extend their service life even further.

Each caster measures 75mm in diameter with a tread width of approximately 24mm. This compact yet stable size provides excellent balance between low profile and smooth rolling performance, while keeping the chair at a comfortable height.