M18 x 1 Form Tap, Semi-Bottoming DIN 374 Small Shank, HSS-E (Cobalt), D10/D11, TiN Coated With Oil Grooves Type: Form Tap,Number of Flutes: 6,Hole Type :Blind Hole 110mm Overall Length, 14mm Shank Diameter, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 927, Order Code 18.0050, Guhring Part #9009270180050