Beige-Grey chair caster wheels provide a lighter looking alternative, while maintaining just enough color to help disguise floor dust that sometimes sticks to chair wheels. The light color and soft polyurethane treads help to protect your hard floors, they do not slip and scuff like hard nylon chair wheels. Soft tread chair caster wheels help to protect hard floor surfaces such as hardwood, linoleum, smooth tile, marble, parquet, chair mats, etc. These chair caster wheels also work fine on most low pile carpets. They are a standard size that will fit many typical office chairs and stools. The top metal stem has a diameter of 7/16" thick, please confirm this measurement before ordering. The caster wheel diameter is 2" for easy rolling on hard and soft floor surfaces. Pricing is per complete set of 5 chair wheels. Specify a quantity of 1 for 1 set.. 2 for 2 sets.. etc. Satisfaction Guaranteed. Ergo360