Load Capacity: Load capacity up to 300 kg/660 lbs. The office chair casters are made of high-quality materials, making them and sturdy. Fits, standard dimensions 11mm x 22mm (does not fit 1KEA and chairs) 360° rotation without scratches: Floor protection: The wheels are made of shock-absorbing polyurethane. QUIET, EASY ROLLING: Precision ball bearings on the caster swivel and shaft allow you to experience smooth, noise-free rolling. Glide easily and quietly with our high-quality cushioned rubber casters. Work or play quietly without disturbing anyone around you. PROTECT YOUR FLOORING: Our replacement office chair wheels are designed to protect hardwood, laminate, tile, and all other hard floors from any potential damage. Quick installation: Say goodbye to complicated setup! Our 2-inch office chair wheels are super easy to install - no tools required. Easily remove the old casters from the chair and insert the new casters securely to a secure fit. Material: stainless steel+pu colour: black Package Contents: 5 x wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.