Freud 8 Piece CNC Router Bit General Purpose Set8 piece General Purpose CNC Router Bit Set, 1 4 Inch Shank specifically designed for a wide variety of applications. Set Includes: Up Cut Spiral Ball Nose Solid Carbide (#72 101), 7. 5 x 3 16" Engraving V Groove Solid Carbide (#70 103), O Flute Up Spiral Bit Solid Carbide (#73 762), Up Cut Spiral Solid Carbide (#75 101), O Flute Up Spiral Solid Carbide (#75 025), O Flute Straight Solid Carbide (#71 040), 1 2" 90 Degree V Groove (#20 104), and 1 2" 60