Feature: 1. Round Handle Design: These boring tools are round shank design, allowing positive or negative rake angles to be set. 2. Cemented Carbide Material: Adopt cemented carbide material, with high hardness and wear resistance, and good cutting performance. 3. Indexable Design: Indexable design, the other side can be used when blunt, no need to remove the tool from the chuck or tool holder. 4. Various Specifications: The kit contains 7pcs boring tools of different specifications, with standard size, suitable for different turning operations. 5. For Turning Operations: These boring tools are often used for turning inner holes, reaming, profiling, etc., to cooperate with boring machines and lathes. Specification: Item Type: Boring Tool Material: Cemented carbide Model: F1-18 Wood Block Material: Pine Uses: Used for turning inner holes, reaming, profiling, etc. Applicable Scene: Cooperate with semi finishing machining of boring machine and lathe Round Shank Diameter B Size: Approx. C Size: Approx. D Size: Approx. Blade Type Wrench Specification Screw Specification 18mm / 0.7in 80mm / 3.1in 35mm / 1.4in 10mm / 0.4in TCMT09 T8 M2.5 x 6 18mm / 0.7in 120mm / 4.7in 75mm / 3in 16mm / 0.6in TCMT11 T8 M2.5 x 6 18mm / 0.7in 80mm / 3.1in 40mm / 1.6in 10mm / 0.4in CCMT06 T8 M2.5 x 6 18mm / 0.7in 90mm / 3.5in 50mm / 2in 10mm / 0.4in CCMT06 T8 M2.5 x 6 18mm / 0.7in 90mm / 3.5in 50mm / 2in 16mm / 0.6in CCMT09 T15 M4 x 8 18mm / 0.7in 115mm / 4.5in 80mm / 3.1in 20mm / 0.8in TCMT11 T8 M2.5 x 6 18mm / 0.7in 115mm / 4.5in 65mm / 2.6in 28mm / 1.1in TCMT11 T8 M2.5 x 6 . Package List: 7 x Boring Tool1 x Wood Block Note: Cemented carbide boring tools are prone to brittle cracks and breakage under excessive force or certain specific local stresses, and have incisive edges, resulting in uneven toolpaths and textures during cutting of the workpiece, which affects the appearance, so pay attention to the feed rate and the correct use of coolant when cutting.