A little back story. I built a five string bass with an ebony neck and am currently working on a six with an ebony neck. Both ebony blanks limited me to narrow string spacings. I had surveyed all the typical manufacturers but they either did not have the narrow spacing required or were custom one off orders with long lead times and high prices. AS well both of these instruments were destined for piezo installations using Graphtech piezo saddles. I found this style available through several sources and made by Sung Il in Korea. The five string has a string spacing of 16.5 and the 6 spacing is 16mm. Just right for the ebony blanks I had and the Graphtech piezos drop right in once holes are drilled through the saddles. Now I selected the black finish and it is surprisingly good. They are also available in chrome and gold. They are most likely a zinc alloy (like many including Badass) and have a good mass. At the price point I was comfortable with modifying them to fit the piezos and not worry about ruining the part. The material is easily drilled and filed so that operation was fairly easy. I thought that worst case would be I can complete the project and later change out for a more expensive bridge. Final result is a look and function that is quite satisfactory. The bridge has saddles similar to ABM style bridges and have the same adjustability. Overall sound from the completed bass is what I expected and to date I have seen no reason to change out the bridge. The finish quality matches the Grover tuners on the five and the Schaller tuners I have for the six string so no issues there. Pretty much this has filled the need for these two builds and I am pleased that I have an alternative for future builds using similar specs. I expect the four string versions to be viable bridges as well. My ratings are in respect to this particular installation. l.