M10 x 1 Green Ring Spiral Flute Bottoming DIN 374 Small Shank Tap, HSS-E (Cobalt), D4/D5, TiCN Coated Type: Green Ring,Number of Flutes: 3,Hole Type :Blind Hole 90mm Overall Length, 7mm Shank Diameter, Without Coolant Throogh, Chamfer Form E: 1.5 to 2 Lead Threads Series No. 4157, Order Code 10.0050, Guhring Part #9041570100050