These HPI factory replacement pivot balls measure 4x6.8mm and are used in the suspension linkages of the Venture 18 platform. The metal construction provides the smooth articulation required for proper suspension and steering geometry. This package contains 10 pivot balls, giving you a useful supply of spares for ongoing maintenance or rebuilds. Features: 4x6.8mm pivot ball dimensions Metal construction 10 pieces per package Fits Venture 18 platform suspension 7/7/26 cs