Product Description 4 flutes Carbide Square milling tools For this milling tools advantages as below: 1) Suitable for copper, Cast Iron, Carbon steel, and Mould steel processing. 2) Main features: Grain size carbon tungsten, high toughness, ALTIN coating, high wear-resistance, special use for high speed cutting of CNC milling machine. Also can increase the smoothness, reduce the rubbing coefficient, and improve the lathe efficiency, save more production time. The Standard specification as below for your information. Any need, please contact us any time.Specifications Flutes D(mm) d(mm) I(mm) L(mm) 1.0 4 3 50 2/4 Flutes 1.5 4 4 50 2.0 4 6 50 2.5 4 8 50 3.0 3 8 50 3.0 4 8 50 3.5 4 11 50 4.0 4 11 50 1.0 6 3 50 1.5 6 4 50 2.0 6 6 50 2.5 6 6 50 3.0 6 8 50 3.5 6 11 50 4.0 6 11 50 4.5 6 13 50 5.0 5 13 50 5.0 6 13 50 6.0 6 15 50 7.0 8 20 60 8.0 8 20 60 9.0 10 25 75 10.0 10 25 75 12.0 12 30 75 14.0 14 45 100 16.0 16 45 100 18.0 18 45 100 20.0 20 45 100