CNGG432ESUJ DL1000, CNGG120408N-SUJ DL1000 is a .031″ corner radius 1/2″ I.C. Turning insert for high speed (up to 6,500sfm) machining in Aluminum, Copper and Titanium materials.   needs a minimum of .031″ doc to cut properly but can cut up to .120″doc at .002-.008″fpm.   This Diamond like coating wears very slowly in these materials.