LP GEAR CARBON FIDELITY CF3600LE phono cartridge Carbon fiber technology for higher fidelity Multifaceted, refreshingly crystal clean sound quality Special elliptical diamond for excellent tracing accuracy Diamond tip r/R radii: 7.5 x 17.5 m (.0003 x .0007 inch) Genuine, unsurpassed LP GEAR cartridge designed with and manufactured by Audio-Technica