XM Fitness Red Sled Upright Post (Pair) - Heavy Duty Sled Push/Pull Training Equipment for CrossFit, Strength & Conditioning - Perfect for Gym, Home Workouts & Athletic Training

These uprights posts only work with the Profession Driving Sled shown below, the sled does include two upright posts already but these will allow you to have a faster transition from one direction to another by having driving posts on every corner.