SRAM Truvativ T20 Seatpost 350mm 400mm 27.2 28.6 30.0 30.4 30.8 31.6 33.9 Al-6061 Bike Bicyle Straight Saddle Seatpost Seat Tube

SPECIFICATIONSPOST DIAMETER:27.2mm 28.6mm 30.0mm 30.4mm 31.6mm 33.9mmPOST LENGTH:350mm/400mmCOLOR (SP):Blast BlackMATERIAL (SP/ST):Al-6061HARDWARE:SteelCLAMP MATERIAL:Al-6061Note:28.6mm/30.0mm/30.4mm/30.8mm/31.6mm/33.9mm need use an adapter