M1.6 x .35 Pionex Form Tap, Semi-Bottoming DIN 371 Standard, HSS-E-PM (PM Cobalt), D2/D3, TiCN Coated Type: Form Tap,Number of Flutes: 5,Hole Type :Blind Hole 40mm Overall Length, 2.5mm Shank Diameter, 6.4mm Threading Depth, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 4487, Order Code 01.6000, Guhring Part #9044870016000