Freud 8 Piece CNC Router Bit General Purpose Set (87-208) V-Groove bits have a steep taper for sharp, deep grooves. Up and down spiral bits make clean, fast cuts. Ball nose bits make clean, deep grooves with a gently rounded bottom. O-Flute bits are specially designed for use in soft plastic material. Enhanced TiCo Super Density Carbide with chromium designed and manufactured by Freud for 2x cutting life Each bit in tis set was designed for CNC machines to deliver a long cutting life, maximum durability and a high quality finish. Ideal for sign making, lettering and engraving in a variety of materials like wood, plastics, composites and more.