7 adjustable heightsThe hack squat attachment features adjustable height settings (adjustable to 7 positions) with a 1.18" adjustment interval, allowing users to perform hack squat exercises through a full range of motion. This aids in effectively targeting specific muscle groups.Adjustable Waist Hole DesignFeaturing a unique waist hole design, distinct from other models available in the market, this hack squat rack boasts compatibility with hole spacing ranging from 3.54 to 4.33 inches.Space-SavingThe hack squat attachment is compact and lightweight, designed to be compatible with our power rack. Ideal for home gyms or limited workout spaces. All attachments can be easily assembled by pulling out and inserting the end joint pins, and conveniently stored by simple folding to maximize space efficiency.