This is not one of the more complicated basketball drills out there, but it is great for working on several different things at the same time. It is going to work on developing a players touch around the basket, timing, and their ability to generate multiple quick jumps in a row. The reason that this last skill is important, is because a lot of times the player that has the best chance to tip the ball back in, is the post player that just missed the short finish at the basket. The reason why, is because they know where the ball is going before anyone else, and they should already have the position to tip the ball in.
Along with this drill working on these specific skills, it also reinforces the habit of crashing the offensive boards. Players must have the mindset of following every shot that is taken by themselves, or a teammate (unless they are getting back for defensive purposes). This is a great drill to use as a warm up before practice, or basketball training.