Coating or Substrate Size Range Neck Length Flutes Finish / Rough Page SOLID END MILLS Work Materials Product Name End Mills ap Upper :1st Recommendation Under : 2nd Recommendation S Ceramic Radius End Mills Short (ap−0.75xDC) METRIC CE4SRB DC6−12 0.75xDC − 4 I280 30° METRIC CE6SRB DC6−12 0.75xDC − 6 I281 30° Barrel End Mills Medium (ap−2.6xDC) METRIC VQT6UR DC8−12 2−2.6xDC − 6 I180 40° I I019