3mm x 5mm x 10mm x 15mm x 20mm Bike Bicycle Carbon Fibre Gloss Spacer Set Kit 1 1/8" Brand New 100% Genuine carbon fibre spacers. Fits 1-1/8" (28.8mm) heads, steerer tubes. Super light weight headset spacers. This sale is for 1 X 3x5x10x15x20mm spacer. Size:3.5cm x 3.5cm x (0.3-0.5-1-1.5-2)cm.