Dont let a broken rod tip force your favorite rod into early retirement. Fuji Aluminum Oxide Rod Tips are made from lightweight aluminum and fit snugly over the tip of your rod blank. Ideal for both casting and spinning rods. 5.5 mm I.D. Ring I.D. 7.5 mm. Per each. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Other Fishing Tools.