The majority of our rubber sheets are rated for speed, Spin, and control. At speeds about 50, you have excellent control. Anything between 50 and 70 is considered ordinary, and anything above 70 is considered fast. The rubber sheets recommended are sticky and smooth. Some players continue to use the dots for faster shots. Long dots on one side are used by others to generate a knuckleball effect and counter Spin. Some players use anti-spin rubbers to neutralize the Spin of their opponents. These are used for better control against spiny serves and loops, but they need more practice and effort to master. The sponge of paddle face ranges in thickness; 1.2 mm - 2.5 mm. A thicker sponge allows you to move faster but with less control. Using a rubber with a thinner sponge may therefore slow down a fast racket.  Some players alternate between a fast, aggressive forehand rubber and a slower, more controlling backhand rubber. Rubber sheets are only offered by the sheet. Each racket requires two rubber sheets.