M16 x 2 Yellow Ring Spiral Flute Semi-Bottom DIN 376 Small Shank Tap, HSS-E (Cobalt), D6/D7, Bright Finish Type: Yellow Ring,Number of Flutes: 3,Hole Type :Blind Hole 110mm Overall Length, 12mm Shank Diameter, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 822, Order Code 16.0000, Guhring Part #9008220160000