Solid Carbide Spektra Extreme Tool Life Coated 2D/3D Carving Straight Ball Nose (Conical Ball) Router Bits are made by Amana Tool, the leading manufacturers of cutting tools. Amana Tool 46280-K-5 5-Pc CNC Solid Carbide Spektra Extreme Tool Life Coated Tapered Spiral 2D/3D Carving 1/32 Dia x 1/4 Inch SHK Router Bit Pack is specially designed for 2D and 3D CNC profiling and carving in plastic & wood with CNC machines. The high-shear ball nose tips cut smooth 2D and 3D contours with reduced stepping while the proprietary Spektra coating (applied by the physical vapor deposition coating process) provides high resistance to wear sharper cutting edges extended tool life and less friction & heat buildup. Excellent for: Acrylonitrile-Butadiene-Styrene (ABS), Acrylic, Acrylic Stone, Composite, Corian, Coroplast, Dibond, Ethafoam, Ethylene-vinyl Acetate Foam (EVA), Expanded Polystyrene Foam (EPS), Expanded Polypropylene (EPP), Extruded Polystyrene Foam (XPS), Fiberglass, Fiberglass PCB Board, Foam Board, Graphite, HDPE, HDU, Lexan, 20lbs High Density Urethane, MDF/HDF, PALFOAM, Polyethylene (PE) Foam, Phenolics, Plastics, Phenolic Composites, Poly (methyl methacrylate) (PMMA), Polyethylene (PE) Foam, Polylam, Polyurethane Foam, PVC, PVC Foam Board, Sign Board, Sign Foam, Titanium, Tooling Board, Wood, XPE (Crosslinked Polyethylene) Foam. SPECIFICATIONS: (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, nACo Ceramic Coating; Flutes: 3; Description: 5-Pack Tapered Ball Nose; Surface Coating: Spektra.