Amana Tool 51593 Solid Carbide Spiral Multi-Helix for Stainless Steel, Steel, Titanium, Cast Iron, Aluminum and Cermet with AlTiN Coating 4-Flute x 1/4 Dia x 5/8 Cut Height x 1/4 Shank x 2-1/2 Inches Long Up-Cut CNC Square Bottom End Mill