If you are looking for stellar-performing, neatly styled, strong and , sleek design and easy to install wheels for your office chair, you need to try out a set of our casters. This provides the perfect combination of softness, durability, and grip. smooth and quit rolling your valuable floors will always be scratch-free. Features - - Material: PU. - Size: 8.00 x 7.00 x 3.00cm/ 3.14 x 2.75 x 1.18 inch. - The precision ball bearings in swivel and axel provide smooth. - Easy rolling while causing no squeaky sounds or noise of any kind, help you to feel relaxed and comfortable to enjoy . - Practically without effort, you can change the chair's direction of movement thanks to the precision bearing in the wheel's turning mechanism. - The maneuverability is excellent and the bearings inside the chair casters allow it to swivel easily. - Just pull off the old casters 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. Package list: 4 x casters