This rubber is graded from 1-12 and applies only to Friendship 729 Family. The grading is based on laboratory measurements and tests performed by world champions.
High Tension rubbers have tension built in to the sponge and top-sheet. This helps reduce the amount of energy lost at the point of impact. In essence, it turns the speed of your opponents shot into additional power for you. In short, High Tension rubbers are fast, VERY FAST.
FREE ASSEMBLY -If
you request it when ordering rubber sheets and a blade, we'll provide
free custom racket assembly service. Please note: You need a pair of
rubber sheets to make up a complete Shakehand racket.
Click
here for how to assemble the rubber sheets.
Click
here for guide to table tennis rubbers.
very nice rubber 
