... Over 3800N/mm2 4, OD 1mm -50mm,Length: 100-330m 1, Brief introduction of our ... .TF12K4014.0592.53750It's recommended for manufacturing of all types of drills, end mills, reamings, carving tools ... TF10K3014.4092.24000It's recommended for manufacturing of all types of drills, end mills, reamings, carving tools ... ,18mm,20mm,22mm,26mm,28mm,30mm. the length can be customerized. The tolerance of grinding ...