100-G is designed with fast and slow speed, which enable to  prolong the life span of the cutters.
The distance between the left vises assembly and the right vises assembly is extended respectively.
The left vises assembly can be rotated by four sides to clamp keys, and there are four ways to position keys.
The right vises assembly is multifunctional, which can clamp keys with upper and bottom layers.
The left and right stepping micro-adjustment devices can adjust cutting of different depths quickly and accurately.