Metolius Nuts #1 to #8 ➕ Black Diamond Nuts #1 to #4. Total of 12 nuts ➕ Metolius NUT TOOL / Feather Nut Tool. Metolius curve nuts are easy to set in two directions. They are also lightweight. Although they are new, I have marked the numbers on the nuts with a marker for easy identification. With the Black Diamond Nuts #1 to #4, you can cover a full range of sizes. The NUT TOOL / Feather Nut Tool is lightweight. Please check the condition in the photos. No returns or exchanges. Please use climbing equipment at your own risk.