Cane Creek Hellbender 70 Headset - Silver Size:IS41/28.6/H9|IS52/40 effectively prevent the chain from 10136

Cane Creek Hellbender 70 Headset Silver Size:IS41 28.6 H9 IS52 40 effectively prevent the chain from 10136 effectively prevent the chain from jumping off even without a chain guide and Has Increased Volume at the Toe Box and Heel for Improved Walking Comfort and Shock AbsorptionArmored Design: Asymmetrically Raised Ankle Collar and Durable Canvas Upper with Perforations Protect Against Scuffs and Scrapes and Help Keep You CoolTotal Security: Lace Closure and Instep Strap Deliver Precise Fit and Superior Foot Hold for Efficient Power Transfer During Aggressive Pedaling on Technical TrailsEfficient Pedaling Platform: Nylon Midsole Enhances Pedaling Efficiency and Cushioning A headset designed to bridge the gap between the 40 series and 110 series headsets internally contoured and relieved to minimize weight and maximize strengthCovers: Low friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose partsCrown Race: Alloy Dual Seal crown race provides excellent seal efficiency with low frictionBearings: Premium