Caster Classics Antique Brass Ball Chair Caster 5-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For METAL or PLASTIC Office Chair Style Chair Base Only. Pops into base. NO Socket.</li><li>2" Ball Roller - ADDS 2-5/8" Height to Chair</li><li>7/16" x 7/8" (11mm x 22mm) Grip Ring Stem - Replaces 7/16" Diameter Stem ONLY</li><li>For Low Pile Carpet or other Non-sensitive Flooring</li><li>NOT for use on Hardwood or Laminate</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21cIQ3%2BcZXL.jpg" noproxy>