Strength Fractal Series Back Extension (Ships in 4-6 weeks)Condition: New The BUILD Fractal Series Back Extension is engineered to strengthen the lower back and surrounding stabilizer muscles through smooth, controlled extension movements. Designed with a biomechanically accurate motion path and ergonomic support, this machine promotes proper spinal alignment while enhancing strength, stability, and posture. The selectorized resistance system provides fluid, consistent loading, while the adjustable range of