I have been using Kawasaki links since 1983! They are expensive! However, they have nothing to do with anything else, German or Italian, that I have tried. Due to their high price, I made various tests with others and concluded that if you don't want to waste time and money, you should buy good products. In the beginning, after 5-6 years, it caused wear at the friction point of the link balls. Then an old mechanic told me to lubricate the friction point with oil 1-2 times a month. Since then, I really have these components, many of which work without any problems, for more than 30 years!!!

WARNING Stay away from cheap Chinese imitations, I tried them and they are really unsuitable even for amateur use.