Our anodized titanium XM Handle Nuts are another cool way to add some color to your XM Folder. They are a direct replacement for the stock stainless steel Handle Nuts that are included with your knife. There are 3 different sizes available for all of the XM Folders - 3" model - 3.5" Model - 4" Model. Please make sure to order the correct size for your knife. Sold in a set of 3.