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When you’re tackling heavy buildup, grease, scale, or light roots in small-to-medium diameter pipe, versatility and control matter. The RIDGID KM-1004 FlexShaft Milling Machine is built specifically for pros who need one machine that can both clean and mill across a wide range of pipe sizes, without being tied to a single power source.

Designed to clean and mill 1-1/4″ to 4″ pipe up to 80 feet, this hybrid-powered machine delivers wall-to-wall cleaning performance while giving crews the flexibility to work corded or cordless depending on the jobsite. Available as the RD79713 (Tool Only) and RD79773 (Domestic Kit), the KM-1004 expands the FlexShaft lineup with hybrid power, smart cable protection, and precision tracking that helps plumbers and drain techs work faster and more confidently.

Built for the Realities of Drain Cleaning

The KM-1004 isn’t just another drain cleaner. It’s designed for wall-to-wall cleaning and heavy-duty descaling in 1-1/4″ to 4″ pipe up to 80 feet. Whether you’re working residential lines, laterals, or light commercial systems, this machine delivers the reach and torque needed for tough jobs.

Out of the box, the unit includes 80 feet of 5/16″ DeadCore cable, optimized for 2″ to 4″ pipes. When the job calls for smaller lines, simply swap to a 1/4″ cable to effectively work in 1-1/4″ to 2″ pipe. That flexibility means fewer machines in the truck and more capability on site.

From house drains and laterals to commercial main lines, the KM-1004 (RD79713) is built to handle:
-Grease and soft blockages
-Heavy buildup and scale
-Light root intrusions
-Pipe descaling and wall-to-wall cleaning

Hybrid Power: Cordless Freedom Meets Corded Dependability

One of the biggest upgrades in the KM-1004 is its hybrid power system. Users can run the machine on a RIDGID 18V battery for maximum mobility or plug into a dedicated power cord when continuous runtime is critical. For contractors moving between service calls or working in tight spaces, this flexibility is a major productivity boost.

For service plumbers moving room to room or working in tight spaces, battery operation delivers true portability. When you’re set up for extended descaling or heavy milling, plug in for the dependability of corded power. It’s the best of both worlds, and a major productivity boost on demanding jobs.

Best-in-Class FlexShaft Versatility

The machine accepts both 1/4″ and 5/16″ FlexShaft cables, allowing crews to cover a broader range of pipe sizes with a single unit. This reduces truck inventory and helps teams respond faster to different jobsite conditions.

Brushless Motor + I-Clutch Protection

Inside the KM-1004 is a POWERSTATE-style brushless motor engineered for long service life and consistent torque. Paired with RIDGID’s auto-adjusting I-Clutch, the system automatically recognizes which cable is installed and adjusts clutch settings to help protect against cable breakage during high-torque milling.

For pros who have experienced costly cable failures, this smart protection is a big deal.

Integrated Cable Counter for Precision

The advanced digital display includes cable counting functionality, giving operators real-time feedback on cable distance and speed. This improves accuracy during reinstatement and descaling work and helps document job progress.

Connected Tool with RIDGID Link

The KM-1004 is a connected tool, allowing users to track: Shareable job insights, maintenance reminders and tool history, through the RIDGID Link app. For service companies managing multiple techs, this adds valuable fleet visibility.

KM-1004 Model Options

KM-1004 FlexShaft Milling Machine 120V 60HZ
Tool Only (RD79713)

The RD79713 configuration is ideal for shops that already run RIDGID batteries or want to build a custom setup. It delivers the full KM-1004 performance platform without bundled battery components.

Best for:

Budget-conscious buyers

Existing RIDGID 18V users

Fleet standardization

KM-1004 FlexShaft Milling Machine Domestic- With Batteries & Charger
(RD79773)

The 79773 package is the ready-to-run solution, bundling the machine with batteries and supporting components so crews can get to work immediately.

Best for:

Teams expanding drain cleaning capabilities

New FlexShaft users

Service trucks needing a turnkey setup

Performance Specifications & Real Jobsite Design

The KM-1004 is engineered for professional drain and pipe rehab work, delivering the power and precision contractors expect from RIDGID. It covers a drain capacity of 1-1/4″ to 4″ (32–100 mm) and comes equipped with 80 feet of 5/16″ cable, while still accepting 1/4″ cable for smaller lines.

The machine operates at a rotational speed of 1000–2000 RPM and runs on hybrid power using a RIDGID 18V battery or a dedicated corded connection. With a working weight of 67.1 lbs (including cable) and overall dimensions of 24.1″ × 27.6″ × 13.1″, it’s built to balance portability with jobsite durability. Additional tech features include a 33-foot wireless range, memory for up to 50 job recordings, and an operating temperature range of 20°F to 122°F. An onboard temperature sensor actively helps protect the cable from overheating during extended milling or descaling runs, adding another layer of protection during demanding work.

RIDGID designed the KM-1004 with real-world usability in mind. The telescoping handle and integrated wheels make it easier to move between service calls, while the pneumatic foot switch enables true two-handed operation for improved control at the drain. This machine is well suited for house drains, laterals, main lines, and commercial lines, and it’s capable of tackling everything from grease and soft blockages to heavy buildup and light root intrusion.

In the end, the RIDGID KM-1004 FlexShaft Milling Machine delivers the kind of versatility and control today’s drain cleaning pros demand. With hybrid power flexibility, smart I-Clutch™ protection, and wall-to-wall cleaning performance across 1-1/4″ to 4″ pipe, it’s built to handle real service work without slowing your crew down. Whether you’re descaling, reinstating, or clearing heavy buildup, the KM-1004 gives you the precision, durability, and mobility needed to stay productive on the job. If you’re looking to expand your FlexShaft capabilities with one powerful, adaptable platform, this is a machine worth serious consideration. Don’t hesitate to reach out at cs@ohiopowertool.com or 614-481-2111 with any questions, comments, or concerns, and be sure to follow us on all your favorite social media channels to stay in the know on all the latest announcements, deals, news, and more!