SincereetaliFeatures: This set contains 6 different cutter heads, which meet your different needs. Made of manganese steel, the drain cleaner suit is sturdy, durable and easy to use. Easy to install: It is easy to install on the dredging machine and the blade can be easily removed by inserting a wrench into the small hole. Spring adjustment: There are two small holes under the knife head, which can be adjusted directly with the spring. This is a set of cutter heads for dredging machine. A replacement for the drain cleaner, easily washed the toilet or pipe clog, quickly opens the hair, grease or vegetables caused by the blockage. Specifications: Material: Manganese steel Color: Black Clamp Diameter: 16mm Fit For: Dredging machine Package Size: 105*58*29mm/4.13*2.28*1.14in Package Weight: 205g/7.23oz Packing List: 6 * Cutter Head 1 * Wrench