This V-Groove bit set contains 3 bits with angles of 60, 90 & 120 degrees. The shanks are 1/4 in diameter and the blades are C3 micro-grain premium carbide. Highlights: - Perfect for cutting v groove paneling and CNC lettering and signage - Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge - For use on CNC, table mount and handheld routers - Silver induction brazing for maximum strength and durability - Manufactured with anti-kickback design to help prevent workshop mishaps Grooving router bits are great for plunge routing in solid woods and MDF with a handheld router or CNC machine. Add an interesting detail to panels or use a template to trace a design with one of these profiles. V groove router bits are also great for lettering and sign making.