Reve D SPM Titanium Ball Stud. Constructed using SPM (Super Precision Machine Cut) these titanium long neck ball studs offer incredible strength and precision for your build. By using titanium Reve D was able to achieve a thin neck due to it's superior strength, giving you the most range of motion possible. This long neck version is ideal for applications where multiple ball stud spacers would be needed. Package includes two ball studs.