DHS Hurricane 3 National Table Tennis Rubber 狂飚 3國套DHS National Hurricane 3 Blue Sponge DHS Hurricane 3 National BLUE SPONGE (Ma Long Forehand Rubber) Table Tennis Rubber, Ma Long uses 41 degrees, actually sponge thickness is 2. 15 but it's custom made for Ma Long only, This rubber is 2. 2 thickness. This is a genuine product not fake and has the anti fake sticker on the packaging. When selecting the hardness, the harder degree sponge 41 will have more speed and the 39 degrees will have more control