J&L 1"-One Inch Threadless External Ceramic Headset-Seal Bearing-25.4*30.0/30.2

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To avoid customs charge problem for you, will declare low value for the package.<br>Contact me by ebay message if you didn't receive in time<br>If you have any concern after you got your order, let me know and I will fix as best as I can to make you a happy purchasing experience<br>I accept paypal only<br>Accept return/exchange within 2 weeks if you save the item in original condition<br>1 years of warranty for proper usage only<br>Description<br>Bearing Cup size： 30.0MM(JIS) or 30.2MM(ISO)<br>Crown Race Inside Diameter: 27mm for Both Type<br>Made of<br>6061<br>-T6 Aluminum<br>Alloy,<br>CNC Machined and Polished&Anodized surface<br>Threadless& External<br>Frame headtube internal diameter Need to be: 30.0MM or 30.2MM<br>2 Sealed Cartridge Bearings<br>Weight: 94g<br>Stack Height: 27MM<br>Regular Bearing<br>：<br>Race Material: P6 bearing steel<br>Enclosure: Two Seals<br>Enclosure Material: Rubber Seal<br>OR<br>Hybrid Ceramic bearing<br>：<br>Race Material: P6 bearing steel<br>Ball Material:<br>Nitrided Silicon Ceramic SI3N4<br>Enclosure: Two Seals<br>Enclosure Material: Rubber Seal<br>