5/8-11 Pionex Form Tap, Semi-Bottom DIN 376 Small Shank, HSS-E-PM (PM Cobalt), H11/H12, TiCN Coated With Oil Grooves Type: Form Tap,Number of Flutes: 6,Hole Type :Blind Hole 100mm Overall Length, 12mm Shank Diameter, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 4491, Order Code 15.8750, Guhring Part #9044910158750