Doubles racquets rackets

Doubles racquets rackets that do not meet the following requirements are not allowed to be in accordance with the rules of competition by using: racket

A. bat hitting the surface should be flat, formed by the connections on the racket box skirt uniform rules, skirt the cross should be intertwined or combined with each other; string made up of samples should be broadly in line, density in particular cannot be less than in other regions of the Central density. 　　Racquet designs and when hitting the strings on both sides of the racket should be positive and negative in nature generally remain consistent.

B. effective January 1, 1997, professionally bat boxes that are used in total length (including Handle) must not exceed 27 inch (73.66 cm). As of January 1, 2000, taken in non-professional game use paddle box total length (including Handle) must not exceed 27 inch (73.66 cm). Before that, a professionally delivered using the rackets can be up to 32 inches (81.28 cm). Total box width must not exceed 12 one-second inches (31.75 cm). 　　Strings were the plane's total length cannot exceed 15 one-second inches (39.37 cm), overall width must not exceed 11 one-second (29.21 cm).

C. boxes, including the Handle can't be appurtenances and installations, unless the appendages and very clear is only used to limit and prevent Racquet worn, cracked, vibrations or to adjust weight distribution, and its dimensions and the location must also be reasonable.