These are Schumacher Racing Products factory replacement 5.5mm short ball studs for the CAT PB platform. Sold as a pair, they are metal ball studs designed to interface with rod ends and suspension linkages throughout the vehicle. Having the correct ball stud length is critical to maintaining accurate suspension geometry, making this a precise like-for-like replacement. Features: 5.5mm ball diameter Short length variant Sold as a pair Threaded shank for secure installation Compatible with CAT PB suspension linkages 7/7/26 cs