Long Neck Micro Square End Mill Blade Diameter (d), mmBlade Length (ℓ), mmEffective Length (E), mmTotal Length (L), mmShank Diameter (D), mm 0.20.425040.30.645040.40.865040.51.045040.51.065040.51.085040.61.245040.61.265040.61.285040.71.445040.71.465040.71.485040.81.645040.81.665040.81.685040.91.845040.91.865040.91.885041.02.065041.02.085041.02.0105041.02.015504