Wrench sets can be difficult to shop for when you don’t know a lot about them and given there's so many different things to keep in mind when looking for a good set. For starters, the type of wrench you purchase is largely dependent upon what job you need done. Other things to think about include what sizes are included in the set as well as whether or not the heads are offset.
With so much to remember, it’s easy to overlook the important factors which make for a quality, long lasting set suited to your specific work or project. If you’re in the market for a wrench set, this buyer’s guide is a great resource for helping identify the key things to look for.
Wrench Types
Ratcheting
These wrenches feature a ratcheting mechanism which allows the user to turn fasteners without removing the tool. Because they don’t require a lot of room, ratcheting wrenches are great for use tight spaces such as in engines. Their ease of use also contributes to operator comfort, especially when you find yourself using a wrench for long periods of time.
Open Ended
This tool has dual open heads of varying sizes which face opposite ways. The best open ended wrenches generally feature “U” shaped heads to prevent spreading. Because each wrench features two different sizes, these are also great option for when you’re low on money or storage space.
Box End
Box end wrenches have enclosed heads with six, eight, or twelve point openings. This makes them great all-purpose sets to keep around because their points will allow them to work on pretty much every fastener you'll end up working on.
Angle
Angle wrenches are open ended wrenches with angled heads. Like ratcheting wrenches, they’re best used for when you’re working in confined spaces where extra leverage is needed.
Crowfoot
These tiny wrenches are shaped like the head of an open ended wrench. Used with a breaker bar or ratchet, they're great for working within the types of super tight spaces where other wrenches or sockets simply wouldn’t fit.
Flare Nut
Flare nut wrenches are similar to open ended wrenches, but they feature extra thick heads that are used for plumbing nuts. The thick heads increase the contact surface area, preventing the nuts from being damaged which are frequently made of softer metals like copper.
Wrench Head Types
Flex or Straight Head
The ends of flex head wrenches can be positioned to the best angle to reach whatever fastener you’re working on, while straight head wrenches are stationary. If you’re going to be working in places with difficult-to-access fasteners, then flex head wrenches are likely to help you tremendously.
Offset Heads
On wrenches with offset heads, each end is angled in a different direction, usually between 30-45 degrees. The purpose of this is essentially that of the flex head, which is to help the user conveniently reach awkwardly placed fasteners
Deep or Regular
Some wrenches come with extra long or deep heads which make it even easier to work on hard to reach fasteners. With wrenches, you most often find that deep heads are offset as well. If you’re going to be working within engines or in tight spaces, deep wrenches may be advantageous.
Points in Enclosed Head
Wrenches with enclosed heads (as well as flare nut wrenches) feature various points within the heads, usually six, eight, and twelve. The more points, the more angles there are available to attach to fasteners. This helps to make sure you’re able to use the wrench regardless of turning room.
Additional Features/Considerations
Metric and Standard
The best wrench sets offer tool sizes in both Metric and SAE. However, these are generally more expensive than sets that offer only one specific measurement type. Take a look at the sizing of the fasteners you’ll be using most often and take this into consideration before purchasing a set which is sized one way or the other.
Wrench Length
The longer the wrench, the more leverage you have to loosen fasteners. If you frequently work on particularly tough or tight fasteners, be sure to get wrenches labeled as “extra long” as it will make the task significantly easier.
Sizing Range
You’ll want to purchase a wrench set which has as close to a complete range of sizes as possible because it ensures you’ll always have the right size tool for whatever you’re working on. Some sets skip over lesser-used sizes (such as nine and eleven millimeters for Metric, or 19/32 for SAE), so be sure to always check the included sizes before purchasing
Number of Wrenches
You should look for the wrench set that’s within your budget which includes as many pieces as possible. The more wrenches you have to work with, the more likely you are to have exactly the right fit for any fastener.
Corrosion Resistance
Corrosion resistance is important, especially if you plan on using your set outdoors or for jobs such as plumbing where tools will be frequently exposed to moisture. Wrenches that are chrome polished or powder coated work best, as they're better suited for resisting rust and corrosion while also making clean up much easier.
Storage Case/Tool Holder
No space or place for your new wrenches? Not to worry, many wrench sets come with their own storage rack, case, or simple roll out holder, good news for those of you out there who are big on keeping their tool collection organized and safe.