The drill is over when the offense scores 5 runs or the defense records 18 outs. The teams takes perfect infield by allowing every player to make a perfect catch and throw. The way this drill is conducted is the coach does not use a ball. Each time the player goes through the correct motion of fielding the ball and making a perfect play. Each time the player receiving the throw will pat his glove to simulate a catch.
Emphasis is placed on talking, following through, and making everything look perfect.
No one will mess up or make a bad mistake. I have used this drill many, many times in practice and before games. It is especially good with young kids to emphasis correct body mechanics. Sometimes it is better not to use a real ball in warm-up if there is a risk of the ball taking a terrible bounce. The drill is used to develop great pitcher control by having the pitcher throw strikes at varying distances.