Product information "Set Ultra-Light 1 1/8""The set includes 2x10mm and 2x5mm in one color.Features- For 1 1/8" steerer tubes (Ø28.6 mm)- Size and weight:- 5mm (2.6 g)- 10mm (4.7 g)- Outside diameter Ø: 34.1 mm- Material: Aluminum