Chris King NoThreadSet Threadless Headset EC37/33 Silver - NOS | eBay
Neco Headset Threadless 34mm Ec34 28.6 30 Bearing 1-1/8" Headset External Cup Road Bike Mountain Bike 34mm Black Silver Parts - Bicycle Headset - AliExpress
Chris King NoThreadSet Headset, 1-1/4" | Tree Fort Bikes
Headset Bearings – White Industries
Chris King Devolution Sotto Voce Headset, EC37/28.6 | Tree Fort Bikes
Chris King NoThreadSet Threadless Headset EC37/33 Silver - NOS | eBay