Helical Solutions 34182W | HEV-R-50312-R.020 0.3125" (5/16) Diameter x 0.3125" (5/16) Shank x 0.0200" Corner Radius x 2.5000" (2-1/2) OAL x 0.8125" (13/16) LOC 5 Flute APLUS Coated Corner Radius End MillHelical Solutions 34182W HEV R 50312 R. 020 0. 3125" (5 16) Cutter DIA x 0. 3125" (5 16) Shank DIA x 0. 0200" Radius x 0. 8125" (13 16) Length of Cut x 2. 5000" (2 1 2) Overall Length Carbide Corner Radius End Mill for Steel, 5 Flutes, APLUS Coated (HEV R 50312 R. 020). From the Helical Solutions End Mills for Steels 5 Flute Corner Radius Variable Pitch product family.