Using for hand making a drawer or other woodworking. Industrial quality router bits. Solid hardened steel bodies with anti design. -up & heat resistant coating. Hook & Shear Angles: High hook & shear angles allow. (C3 -grain Tungsten Carbide) to slice smoothly into producing clean, splinter free. : Totally enclosed & lubricated. Item: Single Double Flute Straight Milling Cutter Diameter: 1/4Inch Balance: +/- .003inch tolerance : Used for wood grooving and bottom digging. Colour:green :Metal Package Contents: 7 x Milling Cutter Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.