7 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia