Massage Chair Rotating Ball Component Part Modification Part Diameter 8.5cm.Upgrade your massage chair with this rolling mechanism that enhances the overall effectiveness of your massages by delivering consistent pressure and smooth motionCrafted as a professional grade component, this massage ball ensures high performance and durability for long term useSimplify your maintenance routine with this user friendly replacement part that allows for quick and easy installation in your recliner chairDesigned to fit a wide range of massage chairs, this rotating ball is an ideal replacement part for maintaining and repairing your massage equipmentEngineered to provide full body relief, it effectively for the back, neck, and calves, ensuring a thorough and relaxing massage experienceMassage Chair Rotating Ball Replaces Repair. Massager Rotating Ball Replacement Maintenance. Massage Seat Rolling Mechanism for Recliner Chair. Back Neck Full Body Massage Ball Calf Roller Part. Professional Accessory High Performance Component. [Enhanced Massage Experience]: Upgrade your massage chair with this rolling mechanism that enhances the overall effectiveness of your massages by delivering consistent pressure and smooth motion [Versatile Compatibility]: Designed to fit a wide range of massage chairs, this rotating ball is an ideal replacement part for maintaining and repairing your massage equipment [Easy Installation]: Simplify your maintenance routine with this user friendly replacement part that allows for quick and easy installation in your recliner chair [Quality Performance]: Crafted as a professional grade component, this massage ball ensures high performance and durability for long term use [Comprehensive Coverage]: Engineered to provide full body relief, it effectively for the back, neck, and calves, ensuring a thorough and relaxing massage experience