There are a vast array of dumbbells on the market and they remain one of the most used pieces of gym equipment around. This largely stems from just how versatile they are and all the different exercises that they can be used for.
If you have a bench available, the number of exercises that are possible with dumbbells grows further still, such as dumbbell bench presses and exercises like a lying fly - particularly useful if you want to target areas of the body such as the triceps, shoulders and the chest. A bench is also useful to be used as support for many other dumbbell exercises.