Cane Creek Compression Plug with Integrated Top Cap for 1 1/8" Carbon Forks Compatible with carbon forks with 1-1/8" carbon fiber steerers Integrated design saves weight at only 35g for the entire expander plug and top cap assembly Precision machined 6061 flat aluminum top cap for a compact, sleek look Textured expansion ring provides secure grip on the inner surface of the steerer tube Use instead of a star nut to prevent damage to your carbon fork