EDIT: - You know it's funny..... a lot of vendors that sell these things do not include the stack height in the description. You'd think they wouldn't want to leave out a critical dimension like that, but they do. Buyer beware!

Just queried Jenson, via on-line chat:

http://www.jensonusa.com/store/produ...d+Headset.aspx

"The Tange-Seiki Levin CDS 1" threaded headset in constructed of steel and features 5/32" ball bearings. Levin CDS •30.2 cups •Click for assistance identifying headset technical measurements and S.H.I.S (Standardized Headset Identification System) Steerer Tube: 1" Threaded Headset Type: 1" Standard Cups S.H.I.S Upper: EC30 S.H.I.S. Clamp Diameter: 25.4-24tpi S.H.I.S Lower: EC30 Crown Race: 26.4 Defined Color: Black Color: Black

Stack Height: 33.4 mm

Bearing Type: 5/32" Ball Material: Steel Weight: 149.0 g Catalog Page: 539 Invoice Description: Tange Levin CDS 1" Threaded 26.4 Black Manufacturer Part Number: LV-CDS 26.4 Black CP Country of Origin: JP "