The dip station come with a rectangular steel base，which has 28.35*35.83 inches wide range of motion. The power tower designed with two thicken supports and H-shaped structure, increasing the contact area and provides double stability.Pull Up Bar Station, Power Tower, Dip Station with 3D Backrest, Strength Training Stand Rack, Adjustable Height Dip Bar for Home Gym Workout | Stand Fitness Exercise Equipment (Black)11 adjustable holes (74-91.7’’) in the supporting tube of dip bar. Not only that, the handle also has 4 positions of length adjustment. Adjust to the position you want to create your own power tower.The pull up station has a patent on the adjustment of the backrest, which can realize up and down and front and back adjustments. The front and rear adjustment adopts auto-screw, and the upper and lower adjustment adopts a rotating nut. There is no need to unscrew the screw completely, which is fast and convenient.The pull up bar station is different from other products. It has a 4way handgrip and can exercise different muscles by using handgrip in different directions.Some customers worry that the height adjustment bracket of the dip station is not stable enough, so we added a lock nut next to the adjustment nut to increase the stability of the movable part.If you have any quality problem, you can contact with us at any time.