This is a PRO-2 Hinge Pin Set for the Slash 2WD. Are you tired of your Stock Slash Hinge Pins backing out after every run? Are you sick of your Stock Slash Hinge Pins bending into every shape imaginable other than straight? Pro-Line's new PRO-2 Hinge Pin Set is the Solution for YOU! Pro-Line's PRO-2 Hinge Pins are made out of Hardened Steel and are designed to stand up to the abuse of hard off-road racing and bashing action. They are secured using Lock Nuts to prevent your Hinge Pins from ever backing off during your TQ run or Bash session. Problem Solved – Get your PRO-2 Hinge Pins today!