I J Pull up / Chin up / Dip /Ab VKR Exercise Power Tower Station With Pull Up Straps Vertical knee raise station (VKR) 1.5" thick forearm cushions for comfortable forearm and elbow support. Adjustable cushioned back support to stabilize movement which keeps your body from swaying. This station will work your quads and lower and upper core abdominal. VKR Width is 24 inches. Maximum recommended weight is 180 pounds. Pull up station primary muscle groups worked include Outer Back and Lats. Pull Up Station primary muscle groups worked include Biceps, Lats and Outer Back Pull up/Chin up bar height 78 inches high. Dip station. Foam hand grips 47 inches from the floor and 24 inch width. Primarily targets the triceps while also working the delts, pecs and upper back muscles. Includes two pull up straps 37 inches from floor (attached with carabiners)