Brand new Cane Creek S2 1 1/8" threadless headset (SHIS EC34/28.6 | EC34/30). 

The essentials are all here- crown race, bearings, upper and lower cups, compression ring and top cover.  Additionally, 6 patented Interlok spacers are inclued, providing a solid interface between the top cover and spacer stack, meaning they “nest” together and into the top of the bearing cover, which helps minimize shifting under load while riding.  You'll get five 5mm spacers and one 2.5mm. 

The adjusting bolt, star nut and top cap are not included.