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PT-1609 EC34/28.6 | EC34/30 1-1/8" , Threadless Headsets Ø28.6 * 34 *30 Height: 16.8+ 13.8= 30.6mm Weight: 150g Bearings: Cartridge ball bearings 1/8" * 25(R404) Material: Steel Finish: EDBK PT-1609 Drawing download