This Butterfly pro-line racket features an Andrzej Grubba FL (flared) blade assembled with Sriver EL 2.1 mm rubber on both sides. The Andrzej Grubba is a flexible blade named after one of the world’s most dynamic players. It is ideal for topspin, short chops, blocks, and smashes. Sriver EL is an all-round rubber with a fine blend of speed and spin. Sriver EL combines Sriver’s top sheet with a medium-soft elastic sponge. This softer sponge allows you to generate more spin without using a power swing. Sriver is the world’s longtime best-selling rubber. The forehand side of this racket is red while the backhand side is black, making it approved for International Table Tennis Federation (ITTF) tournament competition. This racket can produce a wide variety of attacking shots with precise placement. The ratings are: Speed = 75, Spin = 80, and Control = 100. This Andrzej Grubba pro-line table tennis racket should be used by advanced recreational players looking for high control. Take your game to the next level with Butterfly!