Each caster comes with screw mounts and square double sided adhesive pad for simple installation, compatibility with various small furniture like chairs, tables and cabinets Make with cold rolled steels bases, these casters excellent pressure resistance These small casters feature advanced noise reduction, ensuring quiet operations for bedrooms, studies and other noise sensitive spaces with smooth furniture movement The 20pcs includes small casters ( 0.5 " diameter), 40 screws and 40 adhesive pad ( 12x28mm base size) for versatile furniture mobility solution with discreet appearance The swivels wheel allows effortless multi directional movement forward, backward or sideways making furniture repositioning simple and, Manufacturer: YanFengPro