The speed bag can be tricky and awkward when you first try, but stick with it and you will gain an incredible command of the accuracy of your punches.
Once you get the hang of it, you can change speeds and work the bag at any speed you want - improving your timing and hand-eye coordination.
It is called a speed bag for a reason. The bag swivels and rebounds off the board as fast as you can hit, forcing you to keep pace and rhythm.
Most new boxers associate developing punching power with the traditional heavy bag. Many people do not realise what speed bag workouts can do for power punching. Speed equals power, just ask 20-year old Mike Tyson!