Carbide tipped double flute straight bits are micro grain bits designed to give excellent smoothness of cut and balanced cutting with minimal vibration. Positive hook angles cut efficiently while specially designed tips provide fast plunge cutting. Strong webbing and heavy cutter backing extend bit life. All bits must be inserted in the full length of the collet. Be sure to use only router bits and accessories specifically designed for your router! This Bit is not guaranteed against breakage due to extreme length!