BB Micro Carbide Machine Reamer 0.5mm-2.22mm Coated Spiral Flute CNC External Cooling D4 for Small Hole Making Metal Steel

Full Edge Polishing Smooth and delicate, beautiful and generous Improve Efficiency Straight Handle Design Accurate Use Fixed Shank Design Tail anti-slip design, close to the chuck; holds tighter without slipping. High Precision Smooth Cutting The recommended cutting of steel parts within HRC60 degrees The blade is sharp and wear-resistant with high machining finish. It can directly machine 60-degree heat-treated materials from rough to fine processing, reducing the number of tool changes. This improves the machine's mobility and saves production time. passivation Treatment Sharp Hexagonal Design Fully Ground edge Sharp and Durable Wear-resistant and durable, which makes a strong guarantee for the service life of milling cutters Ultrafine Carbide Base Material The reamer made with ultrafine Carbide base material has high wear resistance and strength, and is suitable for high-hardness high-speed cutting applications Carbide Material Chip Groove Hard Coating Fine Grinding Cutter Handle Universal Chamfering of Tail