Enigma Evolution headset

1-1/8" Alloy 7075T6 with Angular Contact Bearings Threadless Headset for Road, CX & ATB Ø28.6x34x30mm Full set CNC Alloy 7075T6 Cups with Stainless Steel Crown Race TK410ATC Angular Contact Bearings Ø30.2x41x7x45° Stack Height: 29mm Weight: 98g