Chris King Tapered external cup headset. Common size for some Dirt Jump frames. EC34 upper cup (standard 1 1/8" size). EC49 lower cup. 1.5" bearing plate. Includes a 20mm spacer in matching red color.
NOS. Never used or installed. May show minor wear from storage. No hidden damage or issues. Pictures are worth 1,000 words, so check them out!