Cane Creek 110 Series Headset. Features: 110-Series features the strongest materials, most effective seals and the best aesthetics with a 110 year no-questions-asked warranty Contoured and relieved 7075-T6 aluminum for minimized weight and maximized strength, with split-lip sealed stainless steel bearings Low friction, dual-seal crown race and top cover provides maximum sealing from contaminants, plus a captured compression ring design for carbon steerer compatibility (Interlok spacer compatible, sold separately) Cane Creek Integrated 41.0mm ID (36x45), Campy Hiddenset 42.0mm ID (45x45) , ZS (ZeroStack), or EC (traditional, External Cup) available for 1", 1-1/8" and tapered steerers Internal parts are cross-compatible across the 10, 40 and 110 series Please see: www.canecreek.com/headset-fit-finder for fit information Specs: S H I S:ZS44/28.6|EC44/30 Stack:8mm/12mm Color:black Weight:96g