grooves designed on the back: Fast blanking, sharpness tool for polishing and shaping, rapid cleaning of waste, time-saving and labor-saving, and high efficiency Complete specifications and styles: Multiple types of plane / inclined plane can be selected to meet your various needs Efficient cutting and playing with multiple scenes: Wood modeling, root carving and wood shaping The inverted teeth are sharpness and wear-resistant: The is sharpness and, which saves time and effort instead of manual wood and greatly improves the working efficiency High-strength carbon steel forging and high-frequency quenching process: The surfaces is high-carbon steel, and the heavy and textured surfaces is treated with high-frequency quenching, which is firm and, Manufacturer: Oxxggkao