Taper Angle per Side . 1/2° ... End Mill Type. Center Cutting. Noncenter Cutting. Number of Milling Ends . 1 . Export Control Classification Number (ECCN) EAR99. REACH. Compliant. Not Compliant. ... Also known as taper degree end mills , they're often use High Speed Steel Shank Diameter: 1-1/4 Overall Length: 5-1/2 60 Degree Tapered End Mill 10 Degree Per Side Tapered End Mills HSS 1/16 - 1/2 Tip , 3/8 - 1-1/4" Shank, Diameter Metric Ball