Router chuck extension

I attempted to utilize it on multiple occasions, but each time, the vibrations were so intense that I had to cease quickly to prevent potential damage to my router that is not new, but is almost unused. Despite various efforts such as repositioning, adjusting the tightness, experimenting with different speeds, and even cleaning and ensuring the proper seating of the extension, the vibrations remained problematic. The situation exacerbated when engaging the router bit with wood. While using the router bit without the extension proved to be smooth, I cannot assess the straightness of the extension, but something is not right. I cannot recommend the product because I am not able to use it.