Accupro 3-Flute Zirconium Coated High Performance Single End Mill for Aluminum, 1/2″ Mill Dia., 1/2″ Shank Dia., 1″ LOC

Precise 29 Degree Acme Screw Thread Pitch Gage with 15 Blades 4901-0033 15 Blades Made of hardened and precision ground tool steel. Pitch number is marked on each blade. Threads included are: 1, 1-1/3, 1-1/2, 1-3/4, 2, 2-1/2, 3, 3-1/2, 4, 5, 6, 7, 8, 9 10