This document provides contact information and details about JD Diamond Tools, a company that produces polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (PCBN) cutting tools. The summary includes the company's address in Korattur, Chennai, India and lists some of its product offerings, which include PCD and PCBN inserts, tools, reamers, end mills and more. Tables further provide information on PCD and PCBN grades and applications.