Features: brand new and high quality. Durable to Use: for Nano blue coating strengthens the hardness so that the service life is extended. The end mills are more wear-resistant. Flutes: Flute end mill can make cleaner cuts. It also improves the working efficiency. Easy to clean chips. High Quality: Made of tungsten steel which is strong and durable. It provides a stable milling performance. for Sharp cutting edge, no glitches on the surface. Multiple Size: Cutting edge diameter from 0.8mm to 3.175mm, commonly used in CNC router. Wide Applications: It is widely used to engrave, drill, mill, cut and carve on hardwood, plywood, acrylic, plastic fiber, resin and other material. Specifications: Material: Tungsten Steel Box Size: approx 55X54X9mm/2.17x2.13x0.35 inches Cutting Edge Diameter: 0.8mm/1.0mm/1.2mm/1.4mm/1.6mm/1.8mm/2.1mm/2.4mm/3.0mm/3.175mm/0.8-3.175mm Package Includes: 10 Pieces Blue Coating Milling Cutter note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!