CORTEX MF-4000 BenchBlast out a killer chest workout in your home gym with the Cortex MF 4000 MultiFunction Bench Press system. The MF 4000 has five levels of adjustable angle, 4 of which will target a different section of your chest, from decline to incline. The 90 degree bench is perfect for a range of exercises including bicep curls and shoulder press. The extendable and reversible barbell holder can also be raised to accommodate for squats and military shoulder