M4 x .7 Pionex Form Tap, Semi-Bottom DIN 371 Standard, HSS-E-PM (PM Cobalt), D6/D7, TiCN Coated With Oil Grooves Type: Form Tap,Number of Flutes: 4,Hole Type :Blind Hole 63mm Overall Length, 4.5mm Shank Diameter, 21mm Threading Depth, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 4488, Order Code 04.0000, Guhring Part #9044880040000