Kyosho UMW508C - 4.8mm Ball Stud (High Mount Type/4Pcs) 京商後備零件經典系列  [KY-UMW508C]

This is a must-have item that expands the range of settings by making the distance from the ball to the seat 2mm higher than normal ball studs.
Optional parts for Altima RB5 (front setting parts)