Feature: The surface is quite smooth which offers a comfortable feeling and nice appearance. The hardness and endurance of the surface are improved. This MT3-M12 holder has better cleanness and more stable accuracy. It can be used when boring holes, circles, end faces, step holes, inner hole end faces, cutting inner hole and ring groove on outer circles, etc. It is a main accessory for boring CNC machine tool, jig boring machine, horizontal boring machine, common boring and milling machine. Spezifikations: Model: MT3-M12 Material: High carbon steel Precision: 0.01mm Angle: 60° Package Includes: 1 x MT3-M12 Taper Hold and Boring Head 3 x Hex Keys