RIDGID 31100 Model 818 Aluminum Straight Pipe Wrench Review
A RIDGID 31100 Model 818 18 inch aluminum straight pipe wrench for pipe from 1 to 2 inches.
- 18 in aluminum straight pipe wrench
- About 40 percent lighter than cast iron
- Replaceable hook and heel jaws
- Pipe capacity up to 2-1/2 in, 3.8 lb
As an Amazon Associate, Big Home Improvements earns from qualifying purchases.
Pros
- Light for its size
- Replaceable jaws
- Extra jaws for coated pipe
Cons
- Aluminum wears faster
- Warranty terms not listed
- Editorial review uses listing specs — not an independent lab stress test
At a glance
A RIDGID 31100 Model 818 18 inch aluminum straight pipe wrench for pipe from 1 to 2 inches.
A lighter pipe wrench for plumbing work.
- 18 in aluminum straight pipe wrench
- About 40 percent lighter than cast iron
- Replaceable hook and heel jaws
- Pipe capacity up to 2-1/2 in, 3.8 lb
Product Specifications
- Brand
- RIDGID
- Model
- 31100
- Color
- Factory
- Size
- 18"
- Dimensions
- 16 x 3.75 x 1.75 inches
- Weight
- 3.8 pounds
- Warranty
- Manufacturer
- In the box
- 1
What This Review Covers
Buying in pipe wrenches is easier when numbers stay honest. Here we review the RIDGID 31100 Model 818 Aluminum Straight Pipe Wrench using hub facts for RIDGID, with emphasis on measurements and constraints you can verify.
Our Summary

The RIDGID 31100 is for plumbers and DIY users who need an 18 inch aluminum pipe wrench for pipes up to 2 inches.
The wrench is 18 inches long and made of aluminum, which RIDGID says makes it nearly 40 percent lighter than a same-size cast iron wrench. It has an I-beam handle, a full floating forged hook jaw, a non-stick adjustment nut, self-cleaning threads and an easily replaceable hook jaw, heel jaw and spring. It also includes special hook and heel jaws for plastic-coated pipe. It handles pipe from 1 inch to 2 inch with a capacity of up to 2-1/2 inches. The wrench weighs about 3.8 pounds and the model is 31100.
Pipe wrenches can slip and crush soft tubing, so use them on steel pipe and use the right size. Pull the handle toward the open jaw side, and do not use a cheater pipe on the handle, since that can bend it. Do not use it on chrome fixtures or plastic pipes without protection. The warranty field only says manufacturer, so check the maker’s terms. Aluminum wears faster than steel jaws under heavy use.
When This Makes Sense

This style of plumbing suits shoppers who already know they need pipe wrenches coverage and want a RIDGID option with transparent listing details.
It is a weaker match if you need a fully custom install, a different capacity class, or a feature the hub row simply does not list.
Practical Caveats

Trade-offs are normal in pipe wrenches. A design that wins on portability may give up enclosed storage; a long wireless claim may assume open line-of-sight; a high load rating usually assumes even distribution.
Our Storage Pick badge is editorial shorthand for “worth considering in this category,” not a guarantee for every floor plan, campsite, or property layout.
Where It Sits in the Category
Against generic no-name alternatives, RIDGID listings often win on clearer packaging and easier returns through Amazon — still read the live seller and fulfillment line.
Against premium ecosystems, this unit may look simpler. That can be a feature if you want fewer apps and more straightforward hardware.
Recommendation Frame
Buy the RIDGID 31100 Model 818 Aluminum Straight Pipe Wrench if the hub numbers and feature set line up with your pipe wrenches job. Skip it if you need a capability the listing does not document.
Use the Amazon button on this page to check the current price, stock and seller details before you buy.
Our content is researched and drafted with AI assistance and reviewed by our team. Product details come from published specs, manufacturer information and owner reviews.
The Bottom Line
A lighter pipe wrench for plumbing work.
Check current price on Amazon →As an Amazon Associate, Big Home Improvements earns from qualifying purchases.
Frequently Asked Questions
What stands out about the RIDGID 31100 Model 818 Aluminum Straight Pipe Wrench?
A RIDGID 31100 Model 818 18 inch aluminum straight pipe wrench for pipe from 1 to 2 inches.
Where can I check the current price?
Use the Amazon button on this page. Prices and stock change often, so we do not list them here.



