A Set Of Five Office Chair Caster Wheels That Are Sturdy And Safe To Use On All Product Details ? PROTECT YOUR FLOORS AND MONEY?Stop damaging your expensive hard wood floors. Many chair wheels use cheap, low quality materials that destroy your flooring. We don't. Encased with soft, polyurethane material our new style wheels are guaranteed not to scratch or leave marks on any surface. So feel free to finally toss that old computer chair floor mat! ? RELIABLE HEAVY DUTY CONSTRUCTION. Entire support bracket and internal parts are made of high grade steel, providing years effortless rolling and durability. The heavy duty design supports up to 650 lbs as a set of 5. ? ENJOY SMOOTH QUIET GLIDING. Smooth and Quiet Rolling; Our precision ball bearings combined with vibration reducing polyurethane tires will give you a smooth and silent roll. They roll amazingly on hardwood floors, carpet, tile, concrete, stone or vinyl. ? DIFFERENT FROM TRADITIONAL WHEELS!: Have solved that traditional chair wheels get tangled with carpet, hair, and scratches on floors. Protect your expensive hardwood safe. ? USER FRIENDLY - Very Easy to Install; No tools required; Pull out your old office chair casters and push in your new wheels until stem is firmly seated and secure. - 1-year Warranty - Money Back Guarantee.(It is not compatible with I-K-E-A chairs, OUR STEM SIZE - 7/16" (11mm) x 7/8" (22mm)) Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.