Cinelli ant 318 stem ant is the new fixed gear specific stem fulfilling a specific requirement of the urban cycling market it is available in only one size 60 mm clamp diameter 31 8 mm fork clamp diameter 28 6 mm 1 18 angle 8496 material forged by 6061 t6 aluminium alloy finishing matt black anodisedwhite painted weight 125g 130g bianco