XMark Powerbase Power Tower with Assisted Lift XM-7632-34 Includes vertical knee raise (VKR), pull-up station, dip station, and weight assist attachment Split grip pull up station for narrow parallel, narrow and wide grip pull ups Weight assist attachment with 4 weight assist bands with 3 pop pin adjustments Ultra-thick 3" Duracraft cushions with tear-resistant, double stitched Duraguard vinyl 11 gauge 2" x 3" and 2" x 4" steel construction