【Specifics】Sponge thickness : 2.2mm, Hardness : 39° or 40° (choose by your demand).
【Feature】 Pimples in Rubber, control and Attack loop,high speed and low fast loop .
【Speed and explosive force】39° rubber can produce stronger rotation and has better controllability. It is suitable for players who like to make spins, make loop attacks or need more control. 40° rubber suits for offensive players who pursue speed and explosiveness. It requires higher manufacturing and control of rotation, which is not as easy as 39-degree rubber.
【Note】Please read the above information carefully before placing the order.