The V4 Accessory Kit is an add on for the V4 System. It gives the ability to measure Compound Caster, Compound King Pin Inclination and simplifies the measuring of chassis twist and squareness. Note: This kit is not required to make the V4 system function, it simply complements it. In the box: • Pair of Extruded aluminum rear targets • One leveling block Five brass legs to for tri-pod configuration • One Delrin tripod holder • One Delrin template holder • One steering center template • One combined caster template • Instruction sheet Custom packing