Ridgid K-750 AUTOFEED Drum Machine
#8 in Main linesFull review
For plumbers and building crews who clear main lines and roots every week. It is overkill for a homeowner with one stubborn clog.
Amazon $3,422.93$3,422.93
The Ridgid K-750 AUTOFEED Drum Machine is the better drain cleaning machine overall, rated 3.5 to 2.6. The Milwaukee M18 FUEL Sectional 2818A-21 costs $222.93 less ($3,200 vs $3,422.93).
Milwaukee M18 FUEL Sectional 2818A-21
#12 in Main linesFull review
For a pro on the M18 battery system who wants one cordless sectional machine for most lines. Too costly and too little published data for home use.
Acme Tools $3,200$3,200
Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every main lines drain cleaning machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | Ridgid K-750 AUTOFEED Drum Machine | Milwaukee M18 FUEL Sectional 2818A-21 |
|---|---|---|
| Overall rating | 3.5/5 | 2.6/5 |
| Price 25% | 13 $3,422.93 | 16 $3,200 |
| Cable 25% | 68 100 ft of 5/8 in cable | 50 cable length not published (neutral score used) |
| Motor 10% | 57 373 W motor | 50 motor power not published (neutral score used) |
| Features 20% | 55 auto feed, cutters included | 50 features not published (neutral score used) |
| Warranty 20% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Ridgid K-750 AUTOFEED Drum Machine | Milwaukee M18 FUEL Sectional 2818A-21 | |
|---|---|---|
| Cable | ||
| Type | Drum machine | Sectional machine |
| Included cable | 100 ft x 5/8 in | 7/8 in |
| Drain sizes | 3 to 6 in | 1-1/4 to 6 in |
| Cutters included | 5 | - |
| Motor | ||
| Motor | 373 W | - |
| Horsepower | 0.5 hp | - |
| Speed | 200 rpm | - |
| Voltage | 115 V | 18 V |
| Cordless | - | Yes |
| Controls and build | ||
| Auto feed | Yes | - |
| Warranty | Lifetime | - |