HSS-E, high-speed steel
When mounted on a twist drill, the GN-Gratex II serves as a deburring and chamfering tool. Depending on the circumstances, it might be used in combination with spacers to create countersinks.
The GN-Gratex II is designed for spiral drills of type N. The use in combination with other types is restricted. By default the chamfer has an angle of 90°. If required, other angles can be produced. If there are any questions, please contact us.