For an occasional user who wants the most cable and auto feed for the least money. It is a budget clone with little backing.
Amazon $291.39The HoldwellS 100 ft x 3/8 in Drain Machine is the better drain cleaning machine overall, rated 4.0 to 3.8. The HoldwellS 100 ft x 3/8 in Drain Machine leads on price and cable. The HoldwellS 100 ft x 3/8 in Drain Machine costs $657.68 less ($291.39 vs $949.07).
For anyone clearing small drains often who wants auto feed on a machine built to last. It is the same K-400 with a powered feed added.
Amazon $949.07Prices 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.
Which should you buy?
- Choose the HoldwellS 100 ft x 3/8 in Drain Machine for price ($291.39 vs $949.07) and cable (100 ft of 3/8 in cable vs 75 ft of 3/8 in cable).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small lines drain cleaning machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | HoldwellS 100 ft x 3/8 in Drain Machine | Ridgid K-400 AUTOFEED Drum Machine |
|---|---|---|
| Overall rating | 4.0/5 | 3.8/5 |
| Price 25% | 91 $291.39 | 26 $949.07 |
| Cable 25% | 98 100 ft of 3/8 in cable | 70 75 ft of 3/8 in cable |
| Motor 10% | 50 motor power not published (neutral score used) | 31 249 W motor |
| Features 20% | 100 auto feed, foot switch, reverse, cutters included | 100 auto feed, foot switch, reverse, cutters included |
| Warranty 20% | 0 warranty not published, scored as none | 100 lifetime warranty |
Specifications
| HoldwellS 100 ft x 3/8 in Drain Machine | Ridgid K-400 AUTOFEED Drum Machine | |
|---|---|---|
| Cable | ||
| Type | Drum machine | Drum machine |
| Included cable | 100 ft x 3/8 in | 75 ft x 3/8 in |
| Drain sizes | 2 to 4 in | 1.5 to 3 in |
| Cutters included | 8 | 4 |
| Motor | ||
| Motor | - | 249 W |
| Horsepower | - | 0.3 hp |
| Speed | 1,800 rpm | 170 rpm |
| Voltage | - | 115 V |
| Controls and build | ||
| Auto feed | Yes | Yes |
| Foot switch | Yes | Yes |
| Reverse | Yes | Yes |
| Weight | - | 45 lb |
| Warranty | - | Lifetime |
