Are you looking for professional and durable chair wheel casters for your office chair or computer chair? High strength and make these replacement casters an for office and home furnishings. The surface is simple and elegant, compact and convenient to install. Features -Color:Black -Material:Rubber,metal -Size:2.00X1.60X1.00cm/0.79X0.63X0.39in - The bottom is made of stable material, causes to the floor and no noise to keep quiet atmosphere. - Used to convert swivel for home and office chairs with casters into fixed casters. - These casters remain stable across smooth floor surfaces such as wood, tile and laminate. - Contemporary design, strength and performance make these replacement casters an for office and home furnishings. - Can be used on wood, metal and tubular metal chairs, furniture and other equipment. Package list: furniture casters