YG-1 YGBasix Drill End Mill, 30 deg Helix Square Regular Length Standard, Series: G9I32 Series, 1/4 in Dia, 2-1/2 in Overall Length, 3/4 in Flute Length, 4 Flutes, 1/4 in Shank Dia, Plain Shank, 3/4 in Length of Cut, 60 deg Point, Solid Carbide Cutting Edge, Solid Carbide, AlCr, Applicable Materials: Non-Alloy Steel, Low Alloy Steel, High Alloyed Steel, Tool Steel, Stainless Steel, Gray Cast Iron, Nodular Cast Iron, Malleable Cast Iron, Aluminum Wrought Alloy, Aluminum Cast, Alloyed, Copper, Copper Alloy (Bronze/Brass) and Non-Metallic Materials