Easy To Install: It is easy to be installed on the dredging machine and the blade can be easily removed by a key insert the small hole. Heavy Duty: Made of manganese steel material, the drain cleaner combination is sturdy and and easy to operate. Fit Spring: There are two small holes under the head of , which can be fit directly with the spring. Widely Application: This is a set of cutter head for dredging machine. A replacement of the drain cleaner, easily washed away the toilet or pipe plug, quickly open up the hair, grease or vegetables caused by blocking., Manufacturer: Akfldms