If your serious about your home gym and working out (and you should be), dumbbells are probably the single most important piece of gym equipment you should own. You can complete a full body workout with these babies in your hands no worries. Including dumbbell bicep curls, rows, shoulder press, dumbbell lunges and squats just to name a few. If you are unsure about which exercise equipment you need when building your home gym, you can't go wrong with a set of dumbbells.