Office Addiction (SET OF 5) Rollerblade Office Chair Replacement Wheels &ndash; Hardwood Safe 2.5-Inch Wheels &ndash; Ball Bearing Swivels &ndash; Floor Safe Design &ndash; Black/Clear SLEEK, STYLISH DESIGN  Each of our rollerblade style office chair wheels features a black base plate head and transparent polyurethane wheels to perfectly match your home furniture or office dcor. MULTIPURPOSE USE  While most office chair wheels merely fit a specific rolling chair, our versatile caster wheels fit a wide variety of office, garage and commercial-grade equipment, including dollies, trailer jacks and garage creepers. SAFE ON HARDWOOD FLOORS  Office Addiction chair replacement wheels are crafted with a durable, floor safe polyurethane to ensure they dont scuff, scrap or scratch hardwood flooring or damage fibers on carpet. EASY INSTALLATION  Orders come with a set of FIVE 2.5" rollerblade style office chair replacement wheels that can easily be installed without tools or hardware. Simply pull out old wheels and push these into place. FITS MOST CHAIRS  Check that your chair is compatible: grip ring stem (7/16" diameter x 7/8" length) [11mm x 22mm]