Abstract: The present invention relates to a device for repairing or replacing a broken string on a racket. The device comprises a first string gripping member for gripping a portion of a broken or replacement string outside the frame of a racket; a second string gripping member for gripping a portion of the broken or replacement string inside the frame of the racket; a connector for connecting the first and second string gripping members; and a reaction member, in the form of a plate, located on the connector between the first and second string gripping members. The reaction member is arranged to bear against the frame of the racket and, together with the first string gripping member, to apply a tension to the string, and together with the second string gripping member, to hold the string under tension so as to allow the string to be connected to the frame of the racket in a tensioned state.