?Manganese Steel Material?The Drain Cleaner Combination Is Made Of Manganese Steel Material, Which Is Sturdy And Durable And Easy To Operate. | | ?Easy To Install?It Is Easy To Install On A Dredging Machine, And The Blades Can Be Easily Removed By Inserting The Key Into A Small Hole. | | ?Fit Spring?There Are Two Small Holes Under The Drain Cleaner Cutter Head, Which Can Be Fit Directly With The Spring, Can Bring You More Convenience. | | ?Increase Efficiency?Drain Cleaning Cutter Heads Are Used To Remove Blockages Caused By Agglomeration Of Objects, And Quickly Open Blockages Caused By Hair, Grease Or Vegetables. | | ?Complete Set?This Product Contains 6 Different Cutter Head And 1 Key, Which Meets Your Different Needs. Collet Diameter: 16 Mm. | |