XMark VKR Vertical Knee Raise with Dip and Pull-up Station Power Tower XM-4432 (Gray or White) Includes vertical knee raise, dip, pull-up, push-up, and sit-up stations Narrow and wide grip pull up bar Large 4 inch contoured roller pads 14-Gauge steel mainframe construction with Scratch resistant powder coat finish Extra thick 2.5-inch high-density cushion and double stitched, tear-resistant duraguard vinyl