Features Easy to use: this cutting head set is suitable for excavator machines and allows easy installation and removal of the cutting head by inserting a small hole. Various shapes: includes serrated, cross serrated, U-shaped, spiral and olive shaped cutting heads, which can meet different usage scenarios. Excellent metal: these knife heads are made of excellent manganese steel with high hardness, corrosion resistance and wear resistance. WITH SPRING KEY: Equipped with a spring connection key, suitable for mounting and disassembling cutting head and spring, simple and practical. Applicable scenes: mainly used for dredging and cleaning pipes and is suitable for places such as family kitchens, washrooms, hotel bathrooms, etc. Specification: Item Type:Drain Cleaner Tool Material: manganese steel. Lining diameter: 0.63 inches. Usage: Applicable to excavator machines, suitable for home kitchen, living room, bathroom, hotel and other places. Package list: 1 x serrated cutting head. 1 x cross serrated cutting head. 1 x U-shaped rotating cutting head. 1 x serrated excavator cutting head. 1 x rotating winding cutting head. 1 x olive excavator cutting head. 1 x spring key 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