Cut square slots, pockets, and edges in plastic.

Bits with straight flutes are for general purpose use.

Carbide bits provide a longer tool life and faster cutting speeds than high-speed steel bits. Their extreme hardness means they are brittle, so they’re not recommended for use with hand tools. A highly rigid setup, such as a CNC machine, is necessary to prevent the bit from breaking.

Bits for hard plastic and composites have two shallow flutes for durability when making cuts on hard material.