Seated AB Curl & Back Extension Machine – Plate Loaded | 450 lb Capacity Isolate your abdominal and lower back muscles with precision on this plate-loaded dual-function machine. Switch between ab curl and back extension simply by flipping the weight post to the opposite starting position — no extra equipment needed. With 5 seat positions, 9 foot support positions, and compatibility with both 1" and 2" plates, it adapts to any user and any weight collection. Key Features: Dual Function – Flip the weight post to switch between ab curl and back extension mode instantly 450 lb Weight Capacity – 14-gauge steel construction with an 11.6" weight holder handles serious loads 5 Seat Positions & 9 Foot Support Positions – Highly adjustable for users of all sizes and body types Rotary Flywheel Mechanism – Provides complete control over your starting position for smooth, consistent movement Universal Plate Compatibility – Detachable adapter fits both 1" and 2" Olympic and standard weight plates 14-Gauge Steel Frame – Heavy-duty construction built for long-term home gym use Perfect For: Abdominal strengthening, lower back development, core stability training, and spinal erector work. Ideal for intermediate to advanced users looking to add serious resistance to their core training. Specifications: Function: AB curl & back extension | Loading: Plate loaded | Weight Capacity: 450 lb | Weight Holder Length: 11.6" | Frame: 14-gauge steel | Seat Positions: 5 | Foot Support Positions: 9 | Plate Compatibility: 1" & 2" (adapter included)