M10 x 1.5 Red Ring Spiral Point Plug DIN 376 Small Shank Tap, HSS-E (Cobalt), D4/D5, Bright Finish Type: Red Ring,Number of Flutes: 3,Hole Type :Through Hole 100mm Overall Length, 7mm Shank Diameter, Without Coolant Through, Chamfer Form B: 3.5 to 5 Lead Threads Series No. 816, Order Code 10.0000, Guhring Part #9008160100000