ETC 1 1/8" Threadless Semi Internal Headset Cartridge Bearings in Black
Semi internal headset which fits inside the main Headstock of the frame so that you do not see the cups.
For Threadless 1" 1/8" Forks
Internal Frame Diameter : 44mm (This is the width of the cups edge to edge)
Colour : Anodized Black
Made from cromoly steel
Picture of the actual product