IKON headset spacers kit contains 3 spacers made of UD carbon in 1″ and 1-1/8″ sizes, so you can dial in the perfect stem height.
UD Carbon material
Steertube diameters : 1″ or 1-1/8″
Thickness : 3mm, 5mm and 10mm high.
sold by 3
1″ : 10mm: 5g / 5mm: 2g / 3mm: 0.7g
1-1/8″ : 10mm: 6g / 5mm: 3g / 3mm: 1.8g