Description The Veloci Rollcii EC30 1″ Threaded Headset is a quality, sealed bearing upgrade to any bike you want to add some style too. The ROLLCii headset is built to last with top-quality sealed ball bearings, ensuring durability on the road. Crafted from lightweight machined aluminum alloy parts, it stands up to anything you throw at it. Veloci ROLLcii EC30 1″ Threaded Headset Specs Cups & Covers Material: 6061 T6 Aluminium Crown Race Material: 7075 T6 Aluminium Bearings: Sealed Bearing (36° x 45°, 27.2 x 38 x 6.5) SHIS Upper: 30 mm / 25.4-27tpi SHIS Lower: EC30 / 26 mm Crown Race Diameter: 26.4 mm Fork Type: 1″ English Threaded Weight: 82 g Finish: Wet Black or Polished Silver