sponge hardness

  1. Rakza 7 vs Tenergy 05 in terms of sponge hardness

    Can anyone please tell me which rubber has a higher sponge hardness on the ESN scale? Additionally, if someone who has used both of these rubbers could share their experience, that would be especially helpful. Thank you in advance for your assistance!
  2. Perceived hardness of 39 degree Chinese rubbers

    Hi everyone, I am interested in your personal experience with Chinese rubbers at 39 sponge hardness nominally, UNBOOSTED (factory tuning is allowed, like ITTF rules), and rank them in the order of how hard it feels to you. If possible, please also state what blades you put them on!
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