Space length: 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm,60mm,70mm,80mm and 90mm. Set of steel (nickel-plated) spacers with the following sizes The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.