With groove cut for Grease. Made to go on aluminum tube. Genuine Rayburn. Priced each. Aluminum Billett Birdcage By Rayburn RAY Birdcage$89.99 Aluminum Birdcage RetainersFour needed to hold birdcages. Aluminum Birdcage Retainers TWM 319-9A$17.95 WARNING!!! AUTO RACING IS A HAZARDOUS SPORT. NO WARRANTY IS MADE OR IMPLIED REGARDING ANY RACING SAFETY PRODUCT SOLD BY ART'S RACEMART TO PROTECT USERS FROM INJURY OR DEATH. USER ASSUMES ALL RISKS. ----------------------------------------------------------- Phone 660-465-2069 Fax 660-465-2045