Krom ChainCoin
How to use it ? Place the piece at an angle of approximately 45° and exert light pressure with your thumb while rotating your hand and the tama in opposite directions. This will scrape off the top layer of wood and connect your bevel to your ken's dropout points in an amazing way, it works great if you've moistened the bevel beforehand.
The brand Krom Kendama
Krom Kendama is a Danish brand created by Thorkild May in 2011, based in Copenhagen. It is probably the most influential brand on the market with countless collections for years. She has collaborated with major clothing brands and artists of all kinds. 4 times world champion, the team of pro players Krom has the best track record in competitions. The discipline probably wouldn't have become so popular without Krom Kendama.