DONIC's "exclusive" blade series at unbeatable value The specially selected ply combinations provide these competition blades with increased control and smooth playing characteristics. These blades are available in three speeds to suit different types of players: OFFENSIVE: DONIC Persson Exclusive OFF This is the fastest of the Exclusive blades. It provides outstanding power for effective fast topspin and hard smashes. In addition, the blade provides first class control with all variations of spin. It is especially recommended for hard-hitting attackers.