This is a package of eight 1/16" Ceramic Nitride Pro Series|
Differential Balls from ACER Racing.
Ceramic Nitride construction, black in color
Grade 5 diamond polished for low rotational mass
79% lighter than Tungsten Carbide and stronger
Each pack is matched for consistent concentricity, roundness and
will not melt or shatter under extreme racing conditions
Eight 1/16" diameter Ceramic Differential Balls