The EDC Tool Roll: Engineer DR-07 Twin Wrench Driver

The EDC Tool Roll is a feature on Jerking the Trigger in which we profile various every day carry worthy tools. The tools shown aren’t multi-tools but rather real tools, that by virtue of their compact size, light weight, usefulness, or unique functionality, can find a place in any range kit, emergency kit, or every day carry bag.

Feel free to comment on the tools that you carry so we can all learn! The discussion on these posts has been very valuable so far.


The Engineer DR-07 Twin Wrench Driver is my favorite screw driver solution for a compact tool kit. I’ve had it for some time now and purposely held off on mentioning it here until I could test the Tekton 14-in-1 Offset Driver as a potential lower cost alternative. While the Tekton is functional, everything about the Engineer DR-07 is a step above.

The Engineer DR-07 Twin Wrench Driver is a Japanese manufactured replaceable bit screw driver that accepts bits at either end of its “L” shaped handle. The 10 included bits and bit carrier are of excellent quality and well marked both on the bit carrier and the bits themselves. The included bits are very much like standard 1/4″ shank bits but slightly longer. However, the DR-07 will accept standard bits though they sit slightly deeper in the bit holders.

The bits are retained via a detent and spring steel collar. This set up applies solid tension even on bits that aren’t notched. The spring steel collar is thicker and provides better tension than the one found on the Tekton version. The bit holders are also magnetized which is a nice touch.

The Tekton version of this tool has a hard plastic cover on the handle but the Engineer DR-07 features a very resilient rubber handle that feels great in the hand. The rubber is molded over an entirely steel structure beneath for strength. The DR-07 also has finer knurling on the bit holders that allows good grip and fine control when turning a screw.

The beauty of this driver is the offset design. This “L” shape keeps the tool very compact but allows the user good reach and the ability to apply a lot of torque when necessary. This one is what you will find in my EDC Tool Roll more often than not. It is one of the few compact drivers that can actually reach screws like an AR-15 grip screw and still provide enough tool to hold onto when loosening or tightening the screw.

I should note that, like the previously profiled Tekton driver, this tool does NOT ratchet. For some reason, almost everyone who puts hands on this thing thinks it is going to ratchet but it does not.

Everything about this tool screams quality. The chromed finish is smooth and seemingly very durable. The bit holders have great tension and use robust parts to retain the bits. The grip is very comfortable in the hand. The included bits and bit holder are some of the nicest I’ve seen included with a tool like this. I own a handful of tools from Engineer and this is what I have come to expect from them.

Where to Buy: I’ve never seen this tool anywhere but online. I purchased mine from Amazon for around $26 shipped. It shipped from Japan which took about 3 weeks to arrive but it was worth the wait given that it is easily my favorite compact screw driver. As of the time of this writing, the price has dropped significantly to around $17 shipped on Amazon: Engineer DR-07 Twin Wrench Driver

You may also be able to find a deal on auction sites. Be advised, these will ship from Japan most of the time so expect to wait.

Alternatives: We’ve reviewed a number of other compact screw drivers in previous installments of The EDC Tool Roll (click the links below to read the reviews):

Tekton 14-in-1 Offset Screwdriver (2945) (This is nearly identical to the DR-07 but with lower, though still acceptable, quality)

Replaceable Edition Fix It Sticks

Doc Allen’s VersaTool

Wera Kraftform Kompact 25


Do you have a compact driver that you prefer or any other tool you want to recommend? Tell us about it below.

Signet Ring – Paramilitary Series from Wise Men Company

Wise Men Company has introduced a new version of their Signet Ring, this time for the Spyderco Paramilitary 2 and 3. The Signet Ring attaches to the Paramilitary to provide improved deployment and retention. It is machined from aluminum and has a 1″ diameter loop to fit most hands. There are versions available for both the Paramilitary 2 and Paramilitary 3 so be sure to select the correct version.

WiseManCompany.com

Free Trigger Guard Holster with Purchase of CCS at Black Rhino Concealment

Black Rhino Concealment (BRC) is offering a free Trigger Guard Holster with the purchase of any of their CCS Holsters just to say “thank you” to their customers. You don’t need a coupon code. Just browse for your handgun make and model, add the holster to your cart, and BRC will automatically add the free holster to your order.

This would also be a great excuse to check out their new and improved website: BlackRhinoConcealment.com

Sawyer Squeeze and Mini Water Filters

When it comes to outdoor equipment (or really anything) the best is rarely cheap. That is exactly what makes the Sawyer Squeeze and Mini Water Filters standout. They are the best trail filters that I have used and they are also the cheapest. That is a tough combination to beat.

Sawyer Squeeze PointOne

I’ve owned a Sawyer Squeeze since before 2013 when they updated the model to include some new fittings and redesigned bags (much needed, the original bags don’t hold up well). That little filter has produced a lot of clean drinking water in that time and it has earned a permanent place in my hiking pack. I have had the Sawyer Mini for much less time but it is equally easy to use, has more versatile connections, is smaller, weighs less, and costs even less (I’ll compare the two later in this article).

Sawyer Mini

Rather than go on and on about these filters, I’ll lay out what I like about both of them. Then, I’ll address them each individually.

What I like about both filters:

  • Compact and lightweight – The Squeeze weighs in at 3 ounces and the Mini at 2 ounces. Both are considerably smaller than any of my previous filters. They are small and light enough to live in my pack – even if I am just on a day hike and carrying all the water I will need.
  • Affordable – These cost between $20-30 for the basic packages. That is less than 1/4″ the cost of my previous ceramic trail filter. The entire filter with bag(s) cost less than just the replacement filters my old system.
  • Durable – These are made from plastic with no ceramic elements. They can take a beating.
  • Reliable Filtering – Both filters boast an absolute .1 micron rating. They get the nasties out.
  • Easy to Use – There is no pumping, no inlet hose to clean, no ceramic filters to clean, and no fuss. Squeeze dirty water through and drinkable water comes out. It’s easy.
  • Versatile – These work with the provided bags but they also thread right onto standard 20 ounce and 2 liter bottles. They can be set up as inline filters on your hydration bladder or as gravity filters on something like an MSR Dromedary Bag.

What I like about the Squeeze:

  • The Squeeze filter has more filter media than the Mini so it is slightly easier to drink from. If you plan to use the simplest set up, which would be to gather unfiltered water in bags/bottles and drink directly from them, the Squeeze works best but…

What I like about the Mini:

  • It is smaller and lighter than the Squeeze and can be used in all the same ways.
  • It has more versatile attachment points built in.
  • It costs less.

The next obvious question is which should you choose. I would (and did) probably just buy the Mini in most cases. It does everything the Squeeze does minus a little flow rate. It’s smaller, lighter, costs less, and a bit more versatile. However, the Squeeze is a bit easier to use in the most straightforward setup so it may be a better choice for cavemen.

Tips:

  • If you are using Sawyer’s water bags, roll them like a toothpaste tube instead of squeezing. They last longer that way.
  • Don’t let your filter freeze (true for all filters, not just these). It can wreck the filter media and there is really no practical way to test the Sawyer filters for damage. Bring it in your sleeping bag at night and tuck it inside your coat during the day to prevent freezing. If you think it froze, replace it.
  • 2 Liter bottles (or any bottles you can scavenge) are great for use with these filters. They are light weight and can be squeezed hard without breaking. Keep the cap so you can squeeze the air out and reseal to take up less space in your pack.
  • I know Sawyer has improved their bags but I have trust issues with them due to my original bags failures. Evernew makes great water bags that have compatible threads. I own several and greatly prefer them to the Sawyer bags. The threads on Platypus bags don’t quite match but some users say they can get them to work.
  • Filling water bags completely full unless you have some tricks up your sleeve. Blow them up with your mouth before submerging or place them under falling water to make filling easier. You can also make a lightweight scoop by cutting the top off of a bottle and capping it. The scoop makes it easy to get the last few ounces of water into the bag.
  • Even if you don’t hike and hate the outdoors, these are so compact and light that they are right at home in a car kit or “bug out bag”. I use a rubber band to wrap a water bag around the filter so it stays compact. You can add a short section of tubing so you can drink right from the source if necessary.
  • They are so small and light, you might even want to carry two – especially in cold weather.

If they were already convenient enough… You can stroll right into most Walmarts and buy them. They are available with a dizzying array of options and even multi-packs. I generally just buy the basic set up and I bought my Mini on Amazon for less than $20.

Sawyer PointOne Sqeeze Water Filter on Amazon

Sawyer Mini on Amazon

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