HOIST FITNESS HD 3600 AB/ LOW BACK COMMERCIAL GYMAb Crunch Low Back HD 3600 The HOIST Ab Crunch Lower Back dual unit features a bi directional press arm that adjusts easily for both ab and back exercises. Angled foot pegs and horizontal foot pads provide a variety of foot placement options, while seven seat pad adjustments allow for varying user heights. By combining dual or multiple exercise in each selectorized unit, our HD Dual Series allows facilities to maximize space and fitness offerings. Bi