A strong, functional torso requires well-defined abdominals and lower back. A successful workout of these complex muscle groups demands a routine built upon a foundation of consistency. Body-Solid's Pro•Dual Ab Crunch Back Extension features a unique rotation position that provides correct, crunch-style movement for maximum abdominal contraction. The adjustable seat and foot hold-down rollers permit ergonomically correct pivot positioning. With gracefully curved frames constructed from sleek, powder-coated tubing that exhibits a modern, design-forward aesthetic, the Pro•Dual Ab Crunch Back Extension builds form into function and value into a superior modular strength training system. Best of all, you can buy with confidence, because the Pro•Dual Ab Crunch Back Extension is built to last a lifetime and is backed by the strongest warranty in the industry! Specifications: Continuous welded, factory assembled weight frame Fiberglass reinforced nylon pulleys 11 gauge 2.375” x 4.625” oval tubing Electrostatically applied powder coated 5.5mm dia., 2500lb rated aircraft cable Durafirm upholstery over 2” high density foam 3 gauge steel connecting plates .50 dia. connecting bolts High density foam rubber hand grips and handles Industrially rated, sealed bearings at all pivot points Adjustable seat and leg hold downs Dimensions: 51"W x 43"L x 62"H Resources Body-Solid Pro Dual DABB-SF Commercial Commercial Ab and Back Machine Assembly Manual Dimensions: Assembled Weight 476lb / 215.91kg Assembled Dimensions Length: 48.00in / 1,219.20mm Width: 48.00in / 1,219.20mm Height: 62.00in / 1,574.80mm Package Dimensions Length: Width: Height: Volume: Gross Weight: