Aheadset TF3 Hollow Top Cap Description: Aheadset TF3 Hollow Top Cap Preload Bolt. Features: Aheadset preload adjusting bolt, cap, and star nut Bolt is hollow for cable pass-through Includes: M10 preload bolt, BLACK (47mm overall length - shaft is 40mm) Star fangled nut (to be pressed into 1 1/8" threadless fork steer tube) Aheadset branded aluminum top cap, BLACK