The last office chair wheels you'll need - not all caster wheels are created equal. Our (Set of 5) heavy-duty chair wheels are made from industrial-grade steel, precision ball bearings, and extremely durable clear polyurethane. They can support loads of up 650 lbs. You will not be needing a desk chair mat anymore - our desk chair wheels replacement will never scratch, smudge or damage your floors. Enjoy a carefree, safe glide across wood, hardwood, laminate, vinyl, tile and carpet floors all day long. Smooth gliding without a sound - a squeaky, rickety office chair wheel is a telltale sign that they're cheap and poorly made. You'll slide and glide around in total silence with our swivel casters. They are really easy to install - you will be done in no time. Just pull out the original wheels and pop these in. These work with almost every new style office and desk chairs - the wheels are 3 in. in Dia and the stem is 11mm in Dia (won't work for IKEA chairs). Color: Aluminum. Material: Metal.