Definitely worth it, making any Stradivarius look beautiful! Very good quality, and easy to install, except for the water key, but it comes with a new spring. Recommend 100%!
This kit adds a touch of gold to your Silver plated strad trumpet! The valve caps fit Bach stradivarius valves, so you can put it on a lacquer horn, but it would not be as colorful. There is a bag of parts that is not shown in the photo, it includes a gold plated stop rod for the 3rd slide, an Allen wrench to install it, stop nuts, felts for the valves, and a water key spring. Simple to install except for the water key. The spring is tricky unless you have experience replacing it.