The Audio-Technica Technicraft TCN-4000 TCN4000 needle stylus is used with the Audio-Technica Technicraft TC-4000 TC4000 phono cartridge. It can also be used to upgrade the performance of the Technicraft TC1000, TC2000 and TC3000 phono cartridges to the level of the TC4000 phono cartridge. The stylus features a highly polished and shaped linear contact nude natural diamond bonded to tapered cantilever for pinnacle tracking and tracing performance and musical reproduction. The Audio-Technica Technicraft TCN-4000 TCN4000 is the best stylus created for the Technicraft series. The stylus is made in Japan by Audio-Technica.