Item Type: Drain Cleaner Tool Material: Manganese Steel Chuck Diameter: 0.63 Inch Use: Applicable to dredging machine, suitable for home kitchen, living room, bathroom, hotel, and other places. Package List 1 x Serrated Cutter Head 1 x Cross Serrated Cutter Head 1 x U Shape Rotating Cutter Head 1 x Serrated Dredging Cutter Head 1 x Rotating Winding Cutter Head 1 x Olive Dredging Cutter Head 1 x Spring Key 1EASY OPERATION: This cutter head set is suitable for dredging machine, allows easy installation and removal of the cutter head by inserting a small hole. 2VARIOUS SHAPES: Includes serrated, cross serrated, U shape, winding, and olive shape cutting heads, which can meet different usage scenarios. 3EXCELLENT METAL: These cutter heads are made of excellent manganese steel with high hardness, corrosion resistance and wear resistance. 4WITH SPRING KEY: Equipped with a spring connector key, suitable for the installation and disassembly of cutter head and spring, simple and practical. 5APPLICABLE SCENES: Mainly used for dredging and cleaning pipes, suitable for places such as family kitchens, washrooms, hotel bathrooms, etc.