Harvey Tool DDA0350-C4 | 0.889mm Diameter x 3.000mm Shank x 50.000mm OAL 130 Degree Drill Point Amorphous Diamond Coated Solid Carbide Micro Drill BitFeatures Optimized for drilling layered composites with excellent performance in virgin plastics and other composite materials Double angle geometry for superior performance in preventing push out and delamination in layered composites Amorphous diamond coating for increased abrasion resistance h6 shank tolerance for high precision tool holders Solid carbide CNC ground in the USA Product Specifications Drill Diameter (mm) 0. 889mm Point Angle 130