Their size(div).
The number one maker of racquetball racquets is currently Ektelon. They have a little under 50% of the market. Then, they're followed by everybody else....Eforce, Wilson, Head, and ProKennex.
Tennis rackets used on tour, by the professional players
A racket is a sports implement consisting of a handled frame with an open hoop across which a network of cord is stretched tightly. It is used for striking a ball in such games as squash, tennis, racquetball, and badminton
As far as necessities go you need the following: 1)A Racquetball Court 2)A Racquetball Racquet 3)A Racquetball 4)Goggles; most places due to safety won't allow you to play without them, and it wouldn't be a good idea. The extra stuff includes, but is not limited to: 1)Headband 2)Armband 3)Glove 4)Underglove
Cliff diving.
To play tennis
no not that I am aware of but there are gold plated rackets
If three fifths of the 55 tennis rackets in stock are metal, then 33 of the 55 tennis rackets are metal. 3/5 * 55 = 33.
The game of tennis was originally played on northern France, however, they did not use rackets. Rackets came around in the 16th century.
No, it's 'these tennis rackets and ball'
Like regular rackets, and that can be found in another Answers question.