Mountain seat tube bicycle seat tube aluminum alloy tube 25.4 seat pole 27.2mm accessory 28.6 seat pole 31.6 Bicycle Seat Post

High quality 6061 aluminum alloyProduct Name: Single nail seat tubeColor: Matte BlackMaterial: Aluminum alloy 6061Specifications: 25.4, 27.2, 28.6, 30.4, 30.9, 31.6mmWeight: 350mm (25.4/335g, 27.2/330g, 28.6/355, 30.4/370g, 30.9/340g, 31.6/360g)450mm（25.4/395g、27.2/385g、28.6/410g、30.4/430g、30.9/390g、31.6/415g）Length: 350/450mm30.8mm and 30.9mm are the same and can be used interchangeably{"styleType":"offer-type-1","items":"628628161805,557208831529,550611763916,833685628807,645488082019,566234726041,645783581104,552542084394,550733360855","usemap":"_sdmap_1"}