Roxon Flex Review: A Fully Customizable Multitool That Changes the Rules

Introduction

Ever since plier-based multitools arrived in the 1980s, one idea has been missing: a tool that ships exactly the way you want it, with exactly the implements you choose. The Roxon Flex finally does that. You pick the frame, you pick each implement, and blank slots are filled with plastic inserts you can replace later. Even better, a detail many people got wrong turns out to be a genuine surprise: this tool can hold far more long implements than it was believed to.

What Makes the Roxon Flex Different

The Flex frame starts at $40 and can be bought on its own, which is useful if you already own implements and just want a second handle for spares. Individual implements can also be purchased separately through the pre-order, so you can build the tool incrementally over time rather than committing to one fixed configuration.

The customization itself is the headline. Instead of a factory-defined tool set, you decide what sits in each slot, and anything you leave out arrives with removable plastic inserts that keep the tool functional until you install the rest. That level of freedom has not really existed in this category before.

Frame, Locking System, and Build Details

A small ball detent in the frame engages the long implements, keeping them from accidentally deploying and adding a little extra resistance when opening. It is not strictly necessary, though, and the locking mechanism does the real work. The lock is not plastic engaging with metal as some assumed: sliding the plastic piece moves a metal bar underneath the lock bar, preventing it from shifting. The plastic is simply a grip surface that positions the metal, and there is nothing wrong with that design.

The pliers are spring-loaded with replaceable cutters. The gap at the closed cutters is intentional: because the jaw is oval shaped, the distance to the cutters changes as it opens, so the space is required. The pocket clip placement is fine as is.

The Four Long Implement Discovery

The belief that the Flex only fits two long implements appears to be wrong. With the right pairings, it can accommodate up to four without modification. A blade can sit next to a saw, scissors, or file because the blades are tapered, so nothing contacts the plier head even though the tool was not designed with this in mind.

The scissors are only 2 mm thick in total, and on one side of the pliers the lower blade faces away from the plier head, so it passes without touching. With minor changes to tang thickness on Roxon’s side, this could become an easy, standard configuration rather than a trick.

One practical note: the long implement closest to the frame can work loose more easily, so using the locks for those slots matters a lot when running four long tools.

Implement Highlights

The scissors might be one of the best-performing multitool scissors available, close to Victorinox territory and easily in a personal top three, especially for precision cutting. They are not thick enough for heavy-duty zip ties, but as a precision implement they are excellent.

The saw performs around 90 percent of the cutting capability of the Victorinox equivalent, possibly a bit more since the cutting edge extends all the way out to the end. Another easy recommendation.

For files, the diamond file is the clear pick. It offers two different grits, something unusual in this category, while the standard crosscut file is noticeably less aggressive than the competition. Pairing the diamond file with the small crosscut file texture on the Flathead implement covers both bases nicely.

The blades are made in 4116 stainless, better than basic 420 and somewhere in the Swiss Army knife range of toughness. The serrated blade uses shallow cuts that pull through man-made materials well, and it does something different from a typical folding knife, making it a smart pick if you already carry one.

The bit driver is $6, takes four slots or 8 mm of thickness, and works only with standard quarter-inch bits, which also means it can serve as a quarter-inch driver directly. A Ferro rod with a plastic holder also exists, but it takes three slots and is probably better carried separately.

Among the small implements, standouts include the can opener with a two-dimensional Phillips, the dedicated 4 mm Phillips that works with the bit kit, the reamer which comes very sharp, and the chisel with a dual wire stripper, which is one of the best implements in the set. One caution: the fish scaler and hook remover should never be used for scaling fish, as the slime ruins a multitool, but the hook puller portion is fine.

Things to Consider Before Buying

The bit driver limits you to standard quarter-inch bits, so plan on carrying at least one flathead to complement a Phillips left inside the driver. The scalpel holder comes in long and short versions; the short one is more versatile for most people, though the long version makes sense if you want to travel with the slot empty where blades are not permitted.

There is no one-hand-open blade option yet. Roxon sells a blank that sits flush with the frame, but a future blank with a cutout for one-handed opening would round out the platform.

Buying Advice

For the pre-order, prioritize the scissors, the saw, the diamond file, the serrated blade, the bit driver, and the chisel with wire stripper. Skip the standard crosscut file in favor of the diamond version, and think twice about the Ferro rod holder unless you want it purely as a spare. Because the frame and implements are sold separately at accessible prices, starting with a core build and expanding over time is a completely viable approach.

Conclusion

The Roxon Flex is a genuine shift in how multitools can be bought: a $40 frame, individually selectable implements, and a surprising capacity for four long tools that removes the biggest objection people had. With only a one-hand-open blade option missing, it comes remarkably close to the fully customizable multitool the category has been waiting for.