The Unifiber Ring +Pin RDM Extension is the essential replacement basic ring + pin adjustment collar for RDM mast extensions, designed to ensure precise and secure fits. Engineered for durability and reliability, it supports your gear’s performance on the water. At Wave Rider, we prioritize quality and customer satisfaction, offering products that keep you riding strong. Whether upgrading or repairing, this collar is a must-have for maintaining your sailing or windsurfing equipment. Trust Wave Rider for dependable sporting goods that help you stay ahead of the waves.