A 12k graphite is a tight woven graphite which creates a really high graphite quality and gives players a really good racket with perfect playability and durability
Rackets with hard EVA inside insure that the touch is very fast and accurate. Here the player has good chances of hitting the ball hard and with lots of power.
Medium balanced rackets are a balance between the optimized handling from head light rackets and the more powerfull head heavy rackets.
The rackets marked with the “x-spin” logo all have a more rough surface than basic rackets. This gives players a better chance to “grab” the ball and create a lot of spin while playing.
If “x-protection” is marked on the racket it means that an extra frame protection is added on top of the frame from production. This protection helps to protect the racket when hitting the ground or wall.