These one-piece aircraft aluminum bass adjusters represent years of research and collaborations with some of the world’s most discerning bassists and bass luthiers. They are precision-crafted using Swiss CNC techniques with the highest quality materials. The hard black anodization is extremely tough and hard to scratch. The “minor” diameters of the unthreaded portions of the rods match the minor diameter of the threads, so only one drill bit is required for installation (#7 bit for the ¼” adjusters, F bit for the 5/16th” adjusters, and 5/16th” bit for the 3/8” adjusters). The wheels have high-grip diamond knurling.
