These padded casters are made using the finest polyurethane material available. They are designed for use on hardwood and laminate floors. The high quality polyurethane padding won't leave scuffs or scratches in your floor and unlike most "rubber" casters, and the polyurethane won't deteriorate over time. The universal stem means that these casters will fit on most office chairs that are available worldwide. Major office furniture manufacturers worldwide have been using standard size casters for many years now and these casters are no exception. They feature a steel 7/16"x7/8" Grip Ring stem. The Grip Ring system means you won't have to worry about the casters falling out of the chair base when you roll around. The wheels themselves are made of durable heavy duty soft polyurethane. This makes them ideal for hardwood and laminate floors. No more sliding and scratching. The are designed with your floor in mind. If you are replacing old casters, simply pull them out of the chair base and pop these new casters right in. It is that simple.

• Soft Polyurethane wheels prevent scratches and damage to hardwood floor.
• Maximum Weight Rating: 100lb per wheel
• Lithium based grease lubricated for smooth movement
• Stem diameter: 7/16"(11mm), stem length: 7/8"(22mm) fits most office chair models sold worldwide.
• Contemporary white edge design

Soft Polyurethane wheels prevent scratches and damage to hardwood floor.The Green Group