Harvey Tool 861635-C3 | 0.0350" (0.9 mm) Diameter x 0.1250" (1/8) Shank x 0.0520" LOC x 2.5000" (2-1/2) OAL x 4 Flutes AlTiN Coated Carbide Square End MillThis solid carbide offering of Miniature End Mills Square Long Reach, Stub Flute is fully stocked in seventeen reach lengths. Reduced neck diameter to avoid heeling Long length design for deep cavities Stub flutes for maximum rigidity CNC ground in the USA Center cutting Solid carbide Product Specifications Tool Number 861635 C3 Cutter Diameter (Inch) 0. 0350" (. 9 mm) Neck Diameter (Inch) 0. 0340" Length of Cut (Inch) 0. 0520" Overall Reach (Inch) 0.