M5 x .5 Red Ring Straight Flute Semi-Bottom DIN 374 Small Shank Tap, HSS-E-PM (PM Cobalt), D4/D5, TiCN, Coolant Fed Type: Red Ring,Number of Flutes: 3,Hole Type :Blind Hole 70mm Overall Length, 3.5mm Shank Diameter, With Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 1090, Order Code 05.0030, Guhring Part #9010900050030