Protect Your Floors And Money: Stop damaging your expensive hard wood floors. Many chair wheels use cheap, low quality materials that your flooring. We don'. Encased with soft, polyurethane material our new style wheels are guaranteed not to scratch or leave marks on any . Smooth And Silent Movement: Custom-designed dual-wheel construction with high-precise bearings and, soft polyurethane casters your office chair glides quietly and smoothly across all surfaces. Perfect for maintaining focus in work, leisure, or gaming environments, whether or in the office. Universal Size: Upgrade any rolling office chair with these smooth caster wheels. The stem size is 3/10 Inch x 1/2 Inch fit almost every office chair on the market. : These chair wheels are made of top-grade steel that can safely hold up to 700lbs, providing years of effortless rolling. The perfect upgrade for any desk and chair set! Easy Installation: No tools needed! Installing these office chair casters is simple - just push them into the allotted slots on your chair, you're done! Protecting your floors form scratches with Casters Chair casters protect your expensive floors from Damage,it doesn' leave scratches on floors, get tangled with cords, carpet, and hair, and even damage your expensive hardwood floors. The best thing about chair casters are supposed to do which is protect hard floors, the casters are coated in soft polyurethane plastic, the soft outer shell helps prevent damage on your floor. The casters operate very smoothly and are quiet The maneuverability is excellent and the bearings inside the chair casters allow it to swivel easily and turn on a dime. The bearings are fully enclosed and it is important because the casters not pick up the floor,if you have pets there are no more worries about the whee clogged up. The casters operate very smoothly and are quiet. Since the outer molding is a soft plastic, but rubber-like material, they do not make the loud rolling sound that standard casters make. Relable Construction: frame, stem and wheel axle all made of high-grade steel. The casters are made of hard plastic with a shell of top-quality parent polyurethane. Easy Installation: Just pull off the old casters from the chair base, with no need for any tools - and push the stem of your new office chair wheels into the socket, until the stem is firmly anchored. Colour:As Shown Material:Plastic+Metal Package Contents: 5 * Office Chair Wheels 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.