THE EC34/EC34 is our 1 1/8 straight steerer headset built for your 34mm head tube bike. This headset is built to be both serviceable and reliable. The reliability comes with cups made out of 6061 aluminum and stainless steel bearings, their durability has been made to match any of our other products. The serviceability is also something we pride ourselves on. You shouldn't have to work on your headset often but when you need to, little things like a split crown race and easily removable bearings can make all the difference. This headset is built to last and for you to enjoy a rock solid, free spinning cockpit. EC34/EC34 S.H.I.S.: EC34/28.6 | EC34/30 HEAD TUBE: Top 34mm Bottom 34mm STACK HEIGHT: Top 16mm Bottom 12mm STEERER SIZE: Top 1 1/8" (28.6mm) Bottom 1 1/8" (30mm) WEIGHT: 96 grams FINISH: polished silver, black, stealth black, blue, red, gold, pink, or purple anodized