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Version of Feb. 21 revised !!! Facts: black rubber with 1.9mm sponge, 92 g. (with packaging), uncutted 65 g. and 44 g. on my OFF+ALC blade. Butterfly states the hardness of the sponge as 35 (Japanese) degrees. - that corresponds to 45 degrees according to international level. The top rubber is quite soft and has a good grip. After finding out many years ago that the Tenergy 05 and 05 FX were too "demanding" for me, I thought I might try the (officially called) "stripped down version". ... the Rozena. (- which is supposed to be easier to control!!!) I ended up playing/testing this rubber for 2 years on different blades. How good or bad it is in the end depends primarily on the blade used. ... it particularly determines spin development and controllability. Sometimes the Rozena (like the Tenergys 05) is also susceptible to incoming spin!!! ...but still easier to control!!! I had the best result with a medium-fast solid wood blade. With such a blade the control was very good and the spin was very high. The worst result was in connection with a hard, fast ZLC blade! - Here the susceptibility to spin was particularly high!!! Due to these very different experiences, I refrain from entering the following values in the table. Spin characteristic: 8.8 to 9.4. Controllability: 8.8 to 9. CONCLUSION: on the right blade, this rubber is really very good! Harder to control on the wrong one and only moderately spiny. - I have never had a covering whose quality depended so much on the wood used!!! ... depends. :-/
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