IronMind’s “Pillars of Power” are essentially portable power racks. These height adjustable bombproof racks – they’ll support over 4,000 pounds – and are a perfect tool for self-spotting bench press and squats as well as an excellent loading platform for numerous exercises. Spotting is always a dilemma when working out alone. The Pillars of Power are actually a better spotter than a workout partner for the bench press and squat.