Drain Cleaner Combination Cutter Head Set, Cutter Head For Dredging, 7pcs 16mm Manganese Steel Drain7 Pcs Complete Cutter Head Set: This product contains 6 different pieces cutter head, which meets your different needs.Heavy Duty: Made of manganese steel material, the drain cleaner combination is sturdy and durable and easy to operate.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.Fit Spring: There are two small holes under the head of the knife, 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.