M5 x .5 Yellow Ring Spiral Point Plug DIN 374 Small Shank Tap, HSS-E (Cobalt), D3/D4, Bright Finish Type: Yellow Ring,Number of Flutes: 3,Hole Type :Through Hole 70mm Overall Length, 3.5mm Shank Diameter, Without Coolant Through, Chamfer Form B: 3.5 to 5 Lead Threads Series No. 827, Order Code 05.0030, Guhring Part #9008270050030