Comes with inserts installed. Cutting diameter: 1-1/4" Insert: APKT1604, Tin Coated. Positive rake 90Degree, right hand cut. Shank Size: R8. Overall Length: 5-27/32". Insert Style: APKT. Insert Size: 1604. Number of Flutes: 3. Cutting Angle: 90 degree. Coolant Through: No R8 Shank Compatibility: Precision-engineered to fit R8 shank specifications with 7/16"-20 threading for reliable and secure machine attachment. Durable Forged Steel Construction: Built from high-quality forged steel to ensure maximum rigidity and endurance against the demands of rigorous machining operations. Efficient Carbide Inserts: Comes pre-installed with 3 APKT1604 coated carbide inserts, offering superior cutting performance and longevity. Optimal Cutting Geometry: Designed with tool angles including a cutting rake angle of 11° to 13°, radial rake angle of 11° to 13°, axial rake angle of 6° to 10°, and a setting angle of 90° for enhanced cutting precision. Specific Dimensions: Features a 1-1/4" cutter diameter and a 5-27/32" overall length, complete with M4 x 8 screws for secure insert installation.