M9 x 1 Yellow Ring Straight Flute Semi-Bottom DIN 374 Small Shank Tap, HSS-E (Cobalt), D4/D5, Bright Finish Type: Yellow Ring,Number of Flutes: 3,Hole Type :Blind Hole 90mm Overall Length, 7mm Shank Diameter, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 830, Order Code 09.0050, Guhring Part #9008300090050