Product Description Carbide Ball Nose End Mill Cutter Grain Size: 0.5-0.6um 12%Co, 88%Wc. Feature: HRA: 92.2 Flexural strength: 3800 Carbide Ball Nose End Mill Cutter 1 Suitable for Copper, Cast Iron, Carbon steel, and Mould steel processing. Stainless steel, Titanium Alloy, Tool steel, and Heat-treated steel processing 2 Main features: Grain size carbon tungsten. High toughness, ALTIN coating, high wear-risistance, special use for high speed cutting of CNC milling machine. Also can inclease the smoothness, reduce the rubbing coefficient, and improve the lathe efficiency, save more production timeR diameter Flute length Overall length Shank length R0.5 2 50 4 R0.75 3 50 4 R1.0 4 50 4 R1.25 5 50 4 R1.5 6 50 4 R1.75 7 50 4 R2.0 8 50 4 R2.25 9 50 6 R2.5 10 50 6 R2.75 11 50 6 R3.0 12 60 6 R3.25 12 60 8 R3.5 12 60 8 R3.75 14 60 8 R4.0 16 60 8 R4.0 16 75 8 R4.5 18 75 10 R5.0 20 75 10 R6.0 24 75 12 R8.0 32 100 16 R10.0 32 100 20 R12.5 35 150 25