Description These caster wheels are perfect for home chairs, office chairs, computer chairs and other furniture. This replacement caster wheelwont damage your floor or carpet and make less noise. Made of premium nylon and zinc alloy materials, strong and durable for use. Features -Color: As shown-Material: Nylon, zinc alloy-Size: 8.50X4.90X4.90cm/3.34X1.93X1.93 in.- Our office chair casters will noteasily scratch your floor or leave markings on your carpets.- Give your chair a smooth rolling experience, bring you more conveniences and comforts.- Made of high-strength and wear-resistant material, durable for use, not easy to deform or break.- It is simple in design and practical in use, give you a pleasant using experience.- These chair wheels are easy to install and dissemble, greatly save your time and efforts. Package list: 2 x chair wheels