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PT-1210A EC30/25.4 | EC30/27 1" , Threadless Headsets Ø25.4 * 30 *27 Height: 16.8+ 11.5= 28.3mm Weight: 81g Bearings: 5/32" * 16 ball retainer Material: AL6061-T6 Finish: Anodized PT-1210A Drawing download