This subset of RAL Classic colours primarily contains shades of White and Black colour or a mixture of those (greyscale). All colour codes in this range starts with RAL-9xxx, this is distinctive feature for this specific RAL color range. Someone may argue that other subsets of RAL Classic chart also contains greyish colour tones, but you will not find pure white or black colours elsewhere on this particular colour chart. For more grey looking colours, you may check the wide collection of grey shades listed on a different category.
Click any of these colours for extensive details and more similarly looking color swatches. If you're still not quite sure, using ral colour search might bring you the answers that you need.
Most people also find, that comparing RAL Colors side by side is also a very handy tool for colour selection.
Get from amazon.co.uk