Body Solid FCD Fusion Vertical Knee Raise, Dip, Pull UpStack up your personal best with Body Solid's Fusion Chin Dip By doing pull ups chin ups and dips, you can effectively and efficiently build muscles in your arms, shoulders and back. Add vertical knees raises, and you'll soon see an increase in definition of your lower abdominal muscles. Best of all, the benefits of these exercises can be enjoyed by fitness enthusiasts of all skill and strength levels. Lat Pull Up (wide grip) Chin Up (close grip)