Ridgid 31100 Model 818 18" Aluminum Straight Pipe Wrench

Industrial Leverage. 40% Lighter. Professional 2.5" Capacity for Main Lines.

The Ridgid 31100 (Model 818) is the gold standard for high-torque mechanical work. For professionals who require the massive leverage of an 18-inch wrench but refuse to carry the 6-lb burden of a traditional iron tool, the Model 818 is the ultimate solution. Crafted from professional-grade aluminum, this wrench delivers the exact same legendary durability and grip strength as the Ridgid heavy-duty iron model but at nearly half the weight.

With a substantial 2.5-inch (65 mm) jaw capacity, the Model 818 is built for the "big jobs"—from industrial gas headers to large-diameter water mains. Featuring a full floating forged hook jaw, it provides the aggressive, non-slip "bite" that allows professionals at The Fastener Group to break loose stubborn, aged fittings with total confidence.

Key Features & Professional Benefits:

• High-Strength Aluminum Housing: Provides industrial-grade leverage while being approximately 40% lighter than cast-iron, significantly reducing fatigue during overhead work or long shifts.
• Heavy-Duty 2.5" (65 mm) Capacity: Perfectly sized for commercial service lines, industrial maintenance, and large-scale mechanical installations.
• Self-Cleaning Adjustment Threads: The oversized nut features specialized threads that automatically eject dirt, oil, and grit, ensuring the jaw moves smoothly even in the harshest jobsite conditions.
• Forged Alloy Steel Jaws: Precision heat-treated hook and heel jaws provide a relentless grip on black iron, galvanized, and heavy-walled pipe.
• Massive Leverage I-Beam Handle: Engineered to distribute force evenly, allowing you to apply maximum torque to seized fittings without the handle flexing or failing.
• Replaceable Jaw System: Built to be the last 18" wrench you ever buy; both the hook and heel jaws are easily replaceable to keep your tool at peak performance for decades.
• Ridgid Lifetime Warranty: Fully backed by the Ridgid Full Lifetime Warranty against material defects and workmanship.

Product Specifications:

The Industrial Standard for Power and Portability

The Ridgid 31100 is a cornerstone tool for the mechanical trades. By merging Legendary Jaw Geometry with an Ergonomic Aluminum Chassis, Ridgid has created a tool that provides the power of a heavyweight with the feel of a lightweight. For the pro at The Fastener Group who demands a tool that never backs down from a high-torque challenge, the Model 818 is the only choice.

Stop wrestling with the weight of iron. Upgrade to the Ridgid 31100 and get the 18-inch industrial power you need in a frame you can carry all day.

Build Your Site-Ready Kit 

Maximize your efficiency and safety. Pair your Ridgid professional wrenches with this high-performance site system.

[→ SHOP SAFETY GEAR HERE]

• [Unilite HX-1080 Rechargeable Work Light] – A 1080-lumen powerhouse built for the toughest jobsites. Features a 180° tilting magnetic base and a flood-to-spot beam, allowing you to illuminate tight mechanical spaces hands-free.
• [Wera 004051 8100 SB 11 Zyklop Speed SAE Set] – A 29-piece master kit with a 3/8" drive. Features the incredibly fast Zyklop Speed Ratchet with a swivelling head and a switch lever for rapid direction changes. Housed in a durable, surface-protecting textile box.
• [Tape Measures] – The Fastener Group offers a large selection of contractor grade tape measures.
• [Milwaukee 48-22-8429 PACKOUT™ XL Tool Box] – The ultimate heavy-duty storage solution. Featuring a 100lb weight capacity and an extra-large interior volume to fit your Greenlee cutters, Ridgid pipe wrenches, and power tools in one IP65-rated, impact-resistant chest.
• [Watson TPR Work Gloves] – Heavy-duty performance with TPR impact protection on the back of the hand. Features a micro-finish nitrile palm for superior grip on oily pipes and high-torque tools.