M8 x 1.25 Red Ring Spiral Flute Semi-Bottoming DIN 371 Standard Tap, HSS-E (Cobalt), D4/D5, Bright Finish Type: Red Ring,Number of Flutes: 3,Hole Type :Blind Hole 90mm Overall Length, 8mm Shank Diameter, 35mm Threading Depth, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 811, Order Code 08.0000, Guhring Part #9008110080000