Inserts Material: Carbide inserts with CVD Coating.Coating endows inserts strong impact resistance, good versatility with high precision, high finish and high wear resistance. Advantage: It is convenient for the user to clamp and replace, and only a wrench is needed to replace the insert .The parts have good rigidity, long service life and lower the cost of tools. Application: Suitable for varieties of processing condition, even in very dirty environment such as cast iron, they also have very good performance. Features: strong grip, impact resistance, fast cutting and processing. Color: As Shown Material: Metal Package Contents: 4pcs * boring bar 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.