Hey you can find one of my review but after 10-20 hours the blade breaks without any reason, you can find my thread here https://www.tabletennisdaily.com/fo...y-Quality-Broken-blade-after-20-hours-of-playI will not say more it is not first time when koto zlc is breaking very fast, the quality check on this construction is the worst I ever seen. You remember the process of SUPER ALC "it took about 10 years from the first blade prototype to the launch of this new product as we faced various challenges in creating the new Super Arylate-Carbon fiber material" that 's the highest level of being lier . Butterfly lies and lies for their consumers and this is the reason you must think twice if you want to buy any butterfly blade because I don't like when someone lies and gets paid for their lies, Japanese producer should be ashamed with their mind tricks, there is no Lean Production (they sold 5 years old blade in 2021), Six Sigma, no MUDA, no Poka Yoke because no one cares why KOTO ZLC IS BREAKING, no VSM because they value only your money, no quality check (you can see pink kiri core not white core). They really broke their Japanese tradition as being leader of production. China is the leader and everybody knows about that. They didn't use any of magician tricks because they work harder than any Japanese brand. The distributor consumer service (not main place, Germany OEM is cool) is one of the worst. Boer have better consumer service. This is my review and this is soft and easy to broke blade because the flex is very high and they didn't even test the composition, you must choose your poison but it is not worth any stars.