Grip Ring Stem Mount Casters are commonly used for office chairs, gaming chairs, dinette chairs, and most chairs in the industry. The Baron Series has been a popular favorite for many seating and furniture manufacturers. With its hooded spherical design and variety of decorative finish options, this spherical caster series will give your product the clean decorative look you intended for. The Baron Series is available in many finishes and sizes and is manufactured right here in the USA, ensuring you receive the best quality and value for your application. The most common size grip ring for chairs is a 7/16" diameter grip ring stem while 7/8" long. Sometimes the stems in different model chairs can be up to 1" long in which our Baron series will still work just fine as our casters are a universal fit and are an industry-standard grip ring stem design.