Specially designed for 2D and 3D CNC profiling and carving in plastic, aluminum & wood with CNC machines. The high-shear ball nose tips cut Smooth 2D and 3D contours with reduced stepping while the proprietary ZRN coating (applied by the physical vapor deposition coating process) provides high resistance to wear, sharper cutting edges, extended tool life and less friction and heat buildup. Some of Amana Tool carving tools, as you can appreciate have a very small diameter therefore any material chip-loads need to reflect that small size. It can however withstand RPM up to 60, 000 RPMs. A directed air-blast to keep chips away along with cooling the tool and work piece are always welcome, #46280-5, (D) diameter: 1/32, (r) radius: 1/64, (a°) angle: 6.2°, (b) Cutting height: 1, (D) shank: 1/4, overall length (L): 3, type: ball nose, ZRN, flutes: 3, 46280-5, 5-Pack CNC 2D and 3D carving 6.2 deg tapered angle ball tip x 1/32 dia x 1/64 radius x 1 x 1/4 shank x 3 inch long x 3 flute solid carbide Up-cut spiral ZRN coated router bits