Cutter Diameter: 4 inch; Bore Diameter: 1-1/2 inch; Number of Inserts: 6 B: 1.97''; D: 1.06''; E: 3.75''; F: 1.97''; G: 0.63''; H: 0.39''; Max Depth of cut AP: 0.1'' Suitable for generic face milling. Surface milling for medium roughing. Recommend for CNC and traditional milling machines. Stop throwing away the used APKT16504 carbide inserts, uses the two unused corners of the APKT inserts to extends the tools life of the already used APKT 1604 carbide inserts. Eco-Friendly Design: Utilizes both unused edges of APKT1604 inserts, extending insert life and reducing waste. Optimized for Versatility: Suitable for generic face milling and medium roughness surface milling across various materials. High Compatibility: Designed for both CNC and conventional milling machines with a 1-1/2'' arbor hole, ensuring a wide range of use. Comprehensive Kit: Includes 6 TiN coated APKT1604 inserts for immediate use and optimal performance. Robust Specifications: Features a 4'' cutter diameter and robust dimensions (B: 1.97'', E: 3.75'', F: 1.97'') for stable and efficient milling.