Shank diameter: 16, 20, 25 mm; Grooving depth: 22~30 mm; Application: can be used directly on the turret; Advantage: high-speed steel sheet are used for the tools, so they have good seismic performance; Characteristics: 1. Adjustable boom length slots for better performance; 2. Recommended the enhanced grooving holders types called sgtbu and kgthr;
