Features: Brand new and high quality Double-edged positive and negative spirals chip removal structure for long service life Sharpness edge and high wear resistance, professionlly designed for wood milling. Cutting the upper and lower sides smooth and burr-free. Large spirals flute, imported tungsten steel base material. Multi-specification size is convenient to use. Specifications: Material:Tungsten steel Type:45mm-4mm/50mm-4mm/50mm-6mm/50mm-8mm/55mm-4mm/60mm-6mm/60mm-8mm/70mm-6mm/70mm-8mm 45mm-4mm:Approx.4x17x45mm/0.15x0.67x1.77inches 50mm-4mm:Approx.4x25x50mm/0.15x0.98x1.96inches 50mm-6mm:Approx.6x17x50mm/0.23x0.67x1.96inches 50mm-8mm:Approx.8x22x50mm/0.31x0.86x1.96inches 55mm-4mm:Approx.4x35x55mm/0.15x1.37x2.16inches 60mm-6mm:Approx.6x32x60mm/0.23x1.26x2.36inches 60mm-8mm:Approx.8x32x60mm/0.31x1.26x2.36inches 70mm-6mm:Approx.6x42x70mm/0.23x1.65x2.75inches 70mm-8mm:Approx.8x35x70mm/0.31x1.37x2.75inches Package Includes: 1x Corn End Mill note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.